Hey loves!!! Can someone plz help me with this math question?

Answer:

              multiply second equation by (-3)

new system of equations:

3x + 5y = 30

-3x - 9y = -30

Step-by-step explanation:

x + 3y = 10

multiplied by (-3):

-3x - 9y = -30

combinig:

3x+5y + (-3x-9y) = 3x - 3x + 5y - 9y = -4y

10 + (-30) = -20

so:   -4y = -20

Answer:

Multiply the second equation by −3 to get −3x − 9y = −30.

Step-by-step explanation:

Answer:

(x + 3)(2x + 5)

Step-by-step explanation:

Given

2x² + 6x + 5x + 15 ← grouping the terms

= (2x² + 6x) + (5x + 15) ← factor each group

= 2x(x + 3) + 5(x + 3) ← factor out (x + 3) from each term

= (x + 3)(2x + 5) ← in factored form

Answer:

EDG 2021

Step-by-step explanation:

Step 2: C. 2x

Step 3: B. 5

Step 4: C. x + 3

Step 5: A. (x + 3) (2x + 5)

Answer:

bettween 30 and 150 yards

Step-by-step explanation:

test

Answer:

Between 30 yds and 150 yds.

Step-by-step explanation:

Got it right Edge 2021

Answer:

Translated up by 1 unit.

Step-by-step explanation:

According to the diagram below, if you were to do the (square root of X + 1), then the graph would be translated to the left by 1 unit. If you were to do the square root of X + 1, the graph would be translated up by 1 unit.

Hope this helps!

Step-by-step explanation:

you will divide both sides of the ratio I.e the 4.5 and 2.25 by 2.25

Answer: x = 41°

Step-by-step explanation:

The sum of the angles in a triangle equals 180°.

To find the missing angle, subtract the sum of the two given angles from 180.

101 + 38 = 139

180 - 139 = 41

x = 41°

The size of the angle at the bottom left of the triangle is 41°.

A triangle is a geometric figure which has three edges and three vertices. The sum of a triangle's three angles is 180°.

Given that the two angles of the triangle are 38° and 101°. We have to find the size of the other angle which is at the bottom left of the triangle. Let the size of the angle be x°.

We have to solve the equation:

x + 38 + 101 = 180

i.e. x = 180 - (38 + 101) = 180 - 139 = 41°

Therefore, the size of the angle at the bottom left of the triangle is 41°.

Know more about the triangles here -

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Answer:

Lucio podrá armar 5 grupos iguales de estampillas.

Step-by-step explanation:

El problema plantea un caso de distribución mediante la aplicación del divisor común mayor a todos los números involucrados. Para ello, primero debemos analizar los divisores de cada uno de estos números:

-30: divisible por 2, 3, 5, 6, 10, 15 y 30.

-75: divisible por 3, 5, 15, 25 y 75.

-160: divisible por 2, 4, 5, 8, 10, 16, 20, 32, 40, 80 y 160.

Así, podemos ver que el divisor común mayor a los tres números es 5, ya que 30, 75 y 160 dan como resultado un número entero tras ser divididos por 5.

Entonces, para poder repartir equitativamente sus estampillas entre la mayor cantidad de amigos posibles, deberá repartir 6 estampillas de animales, 15 estampillas de flores y 32 estampillas de ciudades a 5 amigos. De esta manera, Lucio podrá armar 5 grupos iguales de estampillas.

Answer: 3.25°C

Step-by-step explanation:

From the question, we are given the information that the mean temperature for the first 7 days in January was 3 °C. This means that the total temperature for the first 7 days in January was:

= 3°C × 7

= 21°C

We are also told that the temperature on the 8th day was 5°C. To calculate the the mean temperature for the first 8 days in January, we add the total temperature for the 8 days and then divide by 8.

The total temperature for the 8 days will be: = 21°C + 5°C = 26°C.

The mean temperature for the first 8 days in January will now be:

= 26°C/8

= 3.25°C

Answer:

The answer to this question can be defined as follows:

Step-by-step explanation:

In the question some iformation is missing, which can be defined as follows:

Given:

The value of males:

[tex]n_1= 59\\s_1= 1.46\\\bar y_1=2.91\\[/tex]

The value of Females:

[tex]n_2=60\\s_2= 2.48\\\bar y_2=7.42\\[/tex]

Calculating Degrees of Freedom:

[tex]\bold{ df=\frac{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}{ \frac{1}{n_1-1} (\frac{s_1^2}{n_1})^2+\frac{1}{n_2-1} (\frac{s_2^2}{n_2})^2}}\\\\\\[/tex]

    [tex]=\frac{(\frac{1.46^2}{59}+\frac{2,48^2}{60})^2}{ \frac{1}{59-1} (\frac{1.46^2}{59})^2+\frac{1}{60-1} (\frac{2.48^2}{60})^2}\\[/tex]

    [tex]=9.58 or 95[/tex]

[tex]\alpha= 1-0.95\\\\[/tex]

   [tex]= 0.05[/tex]

for 95% confidence interval are:

[tex]\frac{\alpha}{2} = \frac{0.05}{2} = 0.025[/tex]  

From its t-distribution table , the value of t has an region of ([tex]\frac{\alpha}{2} \ \ 0.025[/tex]) for (df=95) in its upper tail.

shall be given by = t {0.025}=1.985

Calculating the margin of Error:

[tex]M_OE =t_{0.025} \times \sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}[/tex]

         [tex]=1.985\times \sqrt{\frac{1.46^2}{59}+\frac{2.48^2}{60}}\\\\=0.739[/tex]

The difference in mean bill color "[tex]\mu_2 -\mu_1[/tex]" with 95% confidence intervals:

[tex]\to (7.42 - 2.91) \pm 0.739\\\\\to 4.51 \pm 0.739[/tex]

Lower limit=3.771

Upper limit = 5.249

Answer:

True.

Step-by-step explanation:

Remember the vertical line test. Anywhere on that graph, you can draw a vertical line, and it will not touch the function two times. Because of this, it is true.

Answer:

110/360=11/36 (I will get back to this)

The area of the circle would be 225 pi using the formula pi r^2. So you multiply 225pi by 11/36 to find the area.  This rounds to 215.98

Answer: 490.6

Step-by-step explanation:

There are 360 degrees of a triangle.  As 110 degrees are not shaded, you can determine that 250/360, or 25/36 of the degrees in the triangle are shaded.  Then simply find the area of the circle by doing πr^2 and getting 706.5.  Then simply multiply 706.5 * 25/36 to get 490.625, or 490.6 when rounding to the nearest tenth

Answer:

a) 2

b) .05

c) 6.07

d) 0.002

Answer:

B. 254.3 miles

Step-by-step explanation:

If the plane had to return to the airport making a direct flight, all the 3 distances travelled would make up a triangle as shown in the attachment below.

Let x be the distance to travel back to the airport. This unknown distance (x) can be calculated using the Law of Cosines, which is, a² = b² + c² − 2bc cosA

Where,

a = x

b = 160 mi

c = 150 mi

A = 110.167°

Plug in the above values to solve for x

x² = 160² + 150² - 2(160)(150)*cos(110.167)

x² = 25600 + 22500 - 48000*(-0.345)

x² = 48100 + 16560

x² = 64660

x = √64660

x = 254.28

x ≈ 254.3 miles.

Answer:

D.

Step-by-step explanation:

Since this isn't a credit card, there are no interests or fees on a debit card, so A is incorrect. B is also incorrect. You only need identification when you are withdrawing or depositing at a bank, but purchases made in stores or online do not need your identification. You also don't need to record transactions in your checkbook (but it is recommend to keep track of purchases). Modern day technology already records transaction history and all you need to do is access it online.

D is correct because if someone steals your PIN for your debit card, they could go to stores and use that money. You can dispute charges and report to the bank if that happens.

Answer:

B

Step-by-step explanation:

When you get a Debit card, you also get a PIN and everytime you make a purchase, you have to use that PIN. C is wrong because Debit is an electronic form of payment and transactions can be viewed online. A is wrong because there aren't always fees. D is wrong because unless you call the bank provider, you will be held liable for every purchase you make.

Answer:

EF corresponds to E'F'.

∠EDG Is-congruent-to ∠E'D'G'

∠DEF Is-congruent-to ∠D'E'F'

The transformation is a rigid transformation.

Step-by-step explanation:

Which statements are true regarding the transformation? Check all that apply.

EF corresponds to E'F'.

FG corresponds to G'D'.

∠EDG Is-congruent-to ∠E'D'G'

∠DEF Is-congruent-to ∠D'E'F'

The transformation is not isometric.

The transformation is a rigid transformation.

Answer: Transformation is the moving of the location of a point from one place to another. If an object is transformed, all the points of the object are also transformed. There are four types of transformation: reflection, dilation, rotation and translation.

Points  DEFG is mapped to D’E’F’G, The corresponding lengths and angles of the parallelogram still remains the same, Therefore the following applies:

EF corresponds to E'F'.

∠EDG Is-congruent-to ∠E'D'G'

∠DEF Is-congruent-to ∠D'E'F'

FG does not corresponds to G'D' because their lengths are not corresponding but are adjacent.

The transformation is a rigid transformation. A rigid transformation (isometric) preserves the length of the object.

Answer:

EF corresponds to E'F'

<EDG=<E'D'G'

<DEF=D'E'F'

The transition is a rigid transformation

Step-by-step explanation: jus did it and passed edg 2020

make y the subject

y= 5x + 3

perpendicular line needs the reciprocal of the gradient

y = 1/5x + c

substitute in the point

1 = 1/5(5) + c

5/5 = 1 so the answer is y = 1/5x

hope this is helpful!

The required equation of the line is [tex]\bold{y=-\frac{1}{5}x+2}[/tex]

"The equation of the line having slope m and passing through points (p, q) is (y - q) = m(x - p)"

"y = mx + c, where m is the slope and c is the Y-intercept of the line."

For given question,

We have been given a point (5, 1)

The required line is perpendicular to the line 5x - y = -3

⇒ 5x - y = -3

⇒ - y = -5x - 3

⇒ y = 5x + 3

Comparing above equation with slop-intercept form of the line.

m = 5

Let m1 be the slope of the required line.

We know that the product of the slopes of perpendicular lines is -1.

⇒ m1 × m = -1

⇒ m1 = [tex]\frac{-1}{5}[/tex]

Now we find the equation of the required line by using slope-point form.

Let (p, q) = (5, 1)

By using slope-point form,

⇒ (y - q) = m1(x - p)

⇒ (y - 1) = [tex]-\frac{1}{5}[/tex] (x - 5)

⇒ y - 1 = [tex]-\frac{1}{5}x[/tex] + 1

⇒ y =  [tex]-\frac{1}{5}x[/tex] + 2

Therefore, the required equation of the line is [tex]\bold{y=-\frac{1}{5}x+2}[/tex]

Learn more about equation of line here:

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Answer:

150 inches

Step-by-step explanation:

Vincent sketch is a rectangle

10 inches by 15 inches

Length=15 inches

Width=10 inches

If each dimension is tripled

Then,

Length=15*3=45

Width=10*3=30

Perimeter of the new drawing=2(length+width)

=2(45+30)

=2(75)

=150 inches

Answer:

c.) x-2

Step-by-step explanation:

Answer:

X-2

Step-by-step explanation:

Answer:

(Option b): segment BC = segment B double prime C double prime over 3

A complete question related to this found at brainly (ID: 13432500) is stated below:

Triangle A″B″C″ is formed using the translation (x + 1, y + 1) and the dilation by a scale factor of 3 from the origin. Which equation explains the relationship between segment BC and segment B double prime C double prime? coordinate plane with triangle ABC at A negative 3 comma 3, B 1 comma negative 3, and C negative 3 comma negative 3

a) segment B double prime C double prime = segment BC over 3

b) segment BC = segment B double prime C double prime over 3

c) segment B double prime C double prime over segment BC = one third

d) segment BC over segment B double prime C double prime = 3

Step-by-step explanation:

Scale factor = 3

∆ABC = original image

∆ABC was dilated to get ∆A"B"C"

∆A"B"C" = new image

DO(x,y) →3(x,y)

To determine which equation explains the relationship between segment BC and segment B"C", first we would find the distance B and C.

Coordinates of ∆ABC

A =(-3, 3)

B= (1, -3)

C= (-3, -3)

The distance B and C = length of Segment BC

the distance between two points = √[(∆x)² + (∆y)²]

= √[(-3-(-3))² + (-3-1)²] = √[(-3+3)² + (-3-1)²]

= √(0+16) = √16 = 4

Length of Segment BC = 4 units

Length of Segment B"C" = scale factor × Length of Segment BC

B"C" = 3 × BC = 3(4) = 12

Since what we need is the equation of the relationship between the segments

B"C" = 3 × BC

BC = B"C"/3

(Option b): segment BC = segment B double prime C double prime over 3

Answer:

Step-by-step explanation:

(4^2/5)^1/4

first multiply the exponent

2/5*1/4=2/20=1/10

4^1/10= 10√4(the ten is on the top to the square root)

Answer:

C is the only one that looks right

Answer:

Step-by-step explanation:

its (x+1,y+-3)

Answer:

Step-by-step explanation:

This is a geometric sequence because each new term is a multiple (actually, "negative half of the previous term").

If the original population were Po, then the population after d days is

P = Po(0.5)^(d - 1)

Answer:

Area = base x height

Step-by-step explanation:

8X11=88sq

Answer:

88 units^2

Step-by-step explanation:

The area of a parallelogram can be found using he following formula:

a=b*h

where b is the base and h is the height.

We know that 11 units is the base and 8 units is the height (forms a right angle with one of the bases).

b= 11 units

h= 8 units

Substitute these values into the formula.

a= 11 units * 8 units

Multiply

a= 88 units^2

The area of the parallelogram is 88 square units.

Answer:

165 minutes

Step-by-step explanation:

1hour--> 60 minutes

60+60+45=165 minutes

Cost of 15 books = cost of 1 book x 15 = 200 x 15 = Rs 3000

Answer:

  y = -2x -5

Step-by-step explanation:

The line crosses the y-axis at -5. So, b = -5.

It goes down 2 units for each 1 unit to the right, so has a slope of ...

  m = rise/run = -2/1 = -2

__

The slope-intercept form of the equation of a line is ...

  y = mx +b      where m is the slope and b is the y-intercept

For the slope and y-intercept shown, the equation is ...

  y = -2x -5

Answer:  8

Step-by-step explanation:

The formula for the sum of the angles of a polynomial is:

[tex]S_n=180(n-2)[/tex]

1080 = 180(n - 2)

1080 = 180n - 360

1440 = 180n

8 = n

Answer:

8

Step-by-step explanation:

It's an octagon

Answer:

y ≈ 2.1

Step-by-step explanation:

If you look at the graph and locate on the x axis 2, you can see that directly above on the line is a little more than 2.