Can you please help with steps ?

Answer:

21

Step-by-step explanation:

Answer:

[tex]x+2y = 5\\x = 5 -2y\\\\Substitute \ x \ in \ second \ equation \\\\3(5-2y) +5y = 14\\15 -6y +5y = 14\\-y = 14 -15\\-y = -1\\y = 1\\Substitute \ y = 1 \ in \ x = 5 -2y:\\ x = 5 -(2\cdot 1) = 5-2=3\\[/tex]

Option (3, 1)

Answer:

The solution is (3, 1)

Step-by-step explanation:

Use the method "elimination by addition and subtraction."  Multiply all terms of the first equation by -3, obtaining

-3x - 6y = -15

and combine this result with the second equation:

-3x - 6y = -15

3x  + 5y = 14

-----------------------

          -y = -1, or y = 1.

Substituting this result, y = 1, into the first equation yields

x + 2(1) = 5, or x + 2 = 5, or x = 3.

The solution is (3, 1)

Answer:

38.9

Step-by-step explanation:

Sin x = opposite/hypotnuse

Sin-1 = 32/51

=38.86

=38.9

Answer:

The answer is: u-3>-6

This is because 10-3=7 and 7>-6

Answer:

10 units

Step-by-step explanation:

Area of the triangle (A') = 1/2bh

A' = 1/2bh............ Equation 1

Where b = base of the triangle, h = height of the triangle

From the diagram,

Given: b = 12.5 unit, h = 4 unit

Substitute into equation 1

A' = 1/2(12.5)(4)

A' = 25 squared unit.

Also,

Area of the rectangle (A) = Lenght(L)×width(w)

A = Lw............ Equation 2

From the question,

If the area of the rectangle is 40% larger than the area of the triangle

Therefore,

A = 1.4A'

A = 1.4(25)

A = 35 squared unit.

Also given: w = 3[tex]\frac{1}{2}[/tex] = 7/2

Substitute into equation 2

35 = L×7/2

7L = 35×2

7L = 70

L = 70/7

L = 10 units

Responder:

Comprimento de cada parte = 40 cm

Explicação passo a passo:

Dados os comprimentos:

240 cm e 280 cm

Obtenha o maior fator comum de ambos os comprimentos, pois isso dará o comprimento máximo de cada um após ser dividido:

2 _240 _ 280

2 _ 120 _ 140

2 _ 60 _ 70

5 _ 30 _35

___ 6 __7

Portanto, o maior fator comum é:

(2 * 2 * 2 * 5) = 40

Isso servirá como o comprimento de cada parte após a divisão

Answer:

x

Step-by-step explanation:

Answer:

wdym

Step-by-step explanation:

i dont get it

Step-by-step explanation:

1 reflection 2.rotation 3 reflection 4 rotation

Answer:

[tex]49^{\frac{7}{2} }*81^{\frac{-1}{4} }*49^{\frac{5}{2}} \div343^{ \frac{-1}{3}}\\\\(7^2)^{\frac{7}{2} }*(3^4)^{\frac{-1}{4} }*(7^2)^{\frac{5}{2}} \div(7^3)^{ \frac{-1}{3}}\\\\7^7*3^{-1}*7^5 \div 7^{-1}\\\\7^{12} * 3^{-1} *7^1\\\\7^{13}*3^{-1}[/tex]

Answer:

TU = 2 (HD)

Hence, TU = 80

Step-by-step explanation:

line formed by joining 2 mid points of a traingle = 0.5 times of length of 3rd side.

Answer:

I think it is 92. UV and TV are the two sides of the triangle, and yoy are left with the longest side (hypotenuse). Therefore you can use the pythagorean theorem to find your answer a²+b²=c²

So 40+52=92

Step-by-step explanation:

a) The slope formula is given by

m = (y2 - y1)/(x2 - x1)

Let P1(7, 5) and P2(21, 15)

m = (15 - 5)/(21 -7)

= 10/14

= 5/7

b) Let's see if the slope is only a third of the one found in part (a) or m = 5/21. Let P1(0, 0) and P2(21, 5).

m = (5 -0)/(21 - 0)

= 5/21

Indeed, the slope is only a third of part (a), as we predicted.

Answer:

the answers are 7/5 and (21,5)

Step-by-step explanation:

sorry this is late by 2 months

Answer:

8

Step-by-step explanation:

Multiply both sides by 16

x = (2*16)/4

x = 32/4

x = 8

Answer:

::::::

x=8

Step-by-step explanation:

i think (i think)

9514 1404 393

Answer:

  no iterations shown; the root is approximately -1.12911

Step-by-step explanation:

If your method of successive approximation is the Bisection Method, and if your initial interval is [-2, -1], then successive values of x used for reducing the interval are ...

  -1.5, -1.25, -1.125, -1.1875, -1.15625

__

If your method of successive approximation is Newton's method, and if your initial guess is -1.5, then successive values of x will be ...

  -1.1905079, -1.1309053, -1.1291151, -1.1291135

Another iteration confirms this last value is accurate to 8 significant figures.

Answer:

-5/4

-9/8

-19/16

Step-by-step explanation:

This is the answer given

Answer:

plz mark brainliest

Answer:12345678910

Step-by-step explanation:

Answer:

ans = <ebc= 115°

hope this will help

.

.

Answer:

18

Step-by-step explanation:

mark me as

brainliest

18

Answer:

144 ounces

Step-by-step explanation:

Answer:

[tex]50\:\text{kg water}[/tex]

Step-by-step explanation:

This question implies the constant rate or proportion of water to mass. Therefore, we can set up the following equation:

[tex]\frac{60}{90}=\frac{x}{75},\\\\x=\frac{75\cdot 60}{90}=\boxed{50\:\text{kg water}}[/tex]

Answer:

50 kg

Step-by-step explanation:

90 kg = 60kg

/90         /90

1 kg = 0.667kg

1 kg  = 0.667kg

* 75kg    * 75kg

75kg = 50 kg

Answer: 1/6

Step-by-step explanation:

Since Sam has to memorize 1/2 of his lines and he memorizes 1/3 of his lines today, the fractions of his lines that he has left to memorize will be gotten by subtracting 1/3 from 1/2. This will be:

= 1/2 - 1/3

= 3/6 - 2/6

= 1/6

Therefore, he has 1/6 of his lines left to memorize.

Answer:

1/6

Step-by-step explanation:

The fractions of his lines will he have left to memorize is calculated as:

Number of lines he has to memorize - Number of line he memorized today

Number of lines he has to memorize = 1/2

Number of line he memorized today = 1/3

Hence,

= 1/2 - 1/3

Lowest Common Denominator = 6

= 3 - 2/6

= 1/6

Answer:

y = ±[tex]\sqrt{x-3}[/tex]

Step-by-step explanation:

step 1: substitute 'x' for 'y'

x = y² + 3

y² = x - 3

last step: solve for 'y'

y = ±[tex]\sqrt{x-3}[/tex]

Answer:

Every input can have only one output. But an output can have multiple inputs. Basically an x coordinate can have the same y coordinate as another ordered pair but not the same x coordinate. This is why d) does not represent a function.

Step-by-step explanation:

(4,-2)

(4,2)

4 is mentioned twice and every input( x value) can have only one output ( y-value)

Answer:

Step-by-step explanation:

Cost of item = x

Percentage discount = 20%

Discount on item :

20% * x

20/100 * x

0.2x

Cost of item after discount :

Initial cost - discount

x - 0.2x

0.8x

Answer: 1251

Step-by-step explanation:

Given

Leia is setting up 417 toy cars

Each car needs 3 batteries to drive

So, 417 cars need

[tex]\Rightarrow 417\times 3\\\Rightarrow 1251\ \text{batteries}[/tex]

Thus, 1251 batteries is needed.

Answer:

200.96

Step-by-step explanation:

3.14*8*8=200.96

Answer:

The supplementary angle is

153°.

The complementary angle is

63°.

Step-by-step explanation:

This is very right trust mne

Mark me brainlist

The measure of the supplementary angle and the measure of a complementary angle as follows; The supplementary angle is 153°. The complementary angle is 63°.

Two angles whose sum is 90° are called complementary angles.

Two angles whose sum is 180° are called supplementary angles.

If a straight line is intersected by a line, then there are two angles form on each of the sides of the considered straight line.

Those two-two angles are two pairs of supplementary angles.

That means, if supplementary angles are aligned adjacent to each other,

their exterior sides will make a straight line.

Therefore, The supplementary angle is 153°.

The complementary angle is 63°.

Learn more about complementary angles here:

https://brainly.com/question/2882938

#SPJ2

Answer:

The answer is AC=45

Step-by-step explanation:

it's an Isosceles triangle

Answer: 63

Maybe?

If it’s wrong sorry :)

Answer:

7min:15min

Step-by-step explanation:

28min:1 hour

28min:60 minutes

14min:30min

7min:15min

Answer:

x=-3

Step-by-step explanation:

Hi there!

1) Determine the slope

Parallel lines always have the same slope. However, the given line x=8 is a vertical line organized in the form x=d, where d is the x-intercept. Therefore, the slope is undefined, and our line will also have an undefined slope.

Now, because this line will also be a vertical line, it will also be organized like:

x=d

2) Determine the x-intercept (d)

Note that all the points a vertical line passes through will have the same x-coordinate. We're given that this line passes through the point (-3,-2), so therefore, the x-intercept will be (-3,0).

Plug this into x=d:

x=-3

I hope this helps!