3. Which value of x makes the equation 3.5(2x - 4) = 21 true

Answer:

-12

Step-by-step explanation:

(-5)-(7) can easily be called -5-7 when all the brackets are taken away

-5-7= -12

Answer:

You can use the additive inverse to solve for x

Step-by-step explanation:

The additive inverse acquits you to change two things: the negative sign and -7

Therefore, after implementing the additive inverse, here's your expression: -5 + -7. Remeber, the rule for adding negative rational numbers: the sum of 2 negative numbers will be negative. Therefore, simply add 7 + 5 to get 12. Remebering out rule of adding negative rational numbers, you should receive -12 as your answer.

Answer:

x - 15 = - 20

Step-by-step explanation:

x - 15 = - 20

Add 15 to each side:

x - 15 + 15 = - 20 + 15

x = - 5

Answer:

x = 27 ; y = 35

Step-by-step explanation:

Amount to spend = 3495

Let : Number of basketball = x ; number of football = y

Cost per basketball = $75

Cost per football = $42

75x + 42y = 3495

We could insert reasonable values into x and y

Using the trial and compare option :

x = 27 ; y = 35

Compare :

75x + 42y = 3495

75(27) + 42(35) = 3495

2025 + 1470 = 3495

Answer:

a) )12,6)

b) (12,2)

c) (4,-7)

d) (9,-7)

Step-by-step explanation:

a) Dilation

When we dilate, we multiply the given scale factor by each of the coordinates

We have this as follows;

(20 * 3/5, 10 * 3/5) = (12, 6)

2. Here, we will add 5 to the x-axis value and subtract 6 from the y-axis value

We have this as;

(7+ 5, 8-6) = (12,2)

3. By reflecting across the x-axis

we have (x,y) changing to (x,-y)

so we have ;

(4,7) becomes (4,-7)

4. Rotation by 270 degrees (7,9)

If clockwise;

(x,y) becomes (y,-x)

so we have

(7,9) becoming (9,-7)

Answer:

area of the merry go round =πr²

=22/7×3²

=28.28

answer is option D

Answer:

i dont under stand sorry i cant help sorry

Answer:

x=-2

Step-by-step explanation:

Hi! i see your having trouble let me help you :-)

Let's solve your equation step-by-step.

−4(x−3)=20

Step 1: Simplify both sides of the equation.

−4(x−3)=20

(−4)(x)+(−4)(−3)=20(Distribute)

−4x+12=20

Step 2: Subtract 12 from both sides.

−4x+12−12=20−12

−4x=8

Step 3: Divide both sides by -4.

−4x−4=8−4

x=−2

Answer:

x=−2

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Answer:

SSS

Step-by-step explanation:

because the triagles are pretty much the same the one on the left is half of the one on the right

I got similar SAS on mine

Answer:

19.9 cm

Step-by-step explanation:

os that a 3.4 in the very left? if so...this should be it.

Answer:

15.58 cm²

Step-by-step explanation:

Let's calculate the whole shape's area and subtract.

5.5 + 3 = 8.5

8.5 × 3.4 = 28.9 cm²

2 × 6 = 12 cm²

2 + 1 = 3

3.4 - 3 = 0.4

0.4 × 3.3 = 1.32 cm²

28.9 cm² - 12 cm² - 1.32 cm² = 15.58 cm²

Answer: C

Step-by-step explanation:

Answer:

68°

Step-by-step explanation:

x + 56 + 56 = 180

x = 180 - 56 - 56

x = 180 - 112

x = 68°

The value of x for the triangle with angles a,b, and x is 68°.

It is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.

We have,

We will assume that there is a triangle with three angles:

a, b, and x.

The sum of the three angles is 180°.

Now,

a + b + x = 180

a = b = 56°

x = 180 - (56 + 56)

x = 180 - 112

x  = 68°

Thus,

The value of x is 68°.

Learn more about triangles here:

https://brainly.com/question/25950519

#SPJ2

Answer:

the pics too small I cant read itttt

Step-by-step explanation:

make it bigger and I can do ittt

Answer:

135 points

Step-by-step explanation:

We can solve this easily, 30x4=120+15=135

So, after shopping 30 times you would have 120 points plus the 15 you got when making the account, in total 135 points.

Answer:

84/23 or 3 15/23

Step-by-step explanation:

Caculator

Answer:

I'm pretty sure its B but I'm not completely sure, I haven't done this in a while.

Step-by-step explanation:

Answer:

x=10

Step-by-step explanation:

Answer:

x=10

Step-by-step explanation:

3+17=20

20/2=10

x=10

Answer:

The answer is circumference and diameter  

Step-by-step explanation:

C= πd

Answer:

x = 70

Step-by-step explanation:

The total sum of all of the angles in a parallelogram is equal to 360 degrees. Opposite angles are also congreuent meaning that angle ADC and angle ABC are equal. Adding the sum of the two angles gives you 220. Subtract 220 form 360 and you get 140 which is equal to the sum of angles BCD and BAD. Angles BCD and BAD and the sam so dividing 140 by 2 would give you the angle measure of x.

Answer:

Cantidad de metros recorrida= 25 metros

Step-by-step explanation:

Dada la siguiente información:

Cantidad de vueltas= 5

Cirscunsferencia del círculo= 5 metros

Para calcular la cantidad recorrida, debemos usar la siguiente formula:

Cantidad de metros recorrida= cantidad de vueltas*cirscunsferencia del círculo

Cantidad de metros recorrida= 5*5

Cantidad de metros recorrida= 25 metros

Answer:

A

Step-by-step explanation:

Answer:

The zeros are -3 and 5, because k(x)= -(x + 3)(x - 5).

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

Answer: sorry i only know the answer to the perimeters

1. 24 perimeter

2.85 perimeter

3.99 perimeter for the 3rd question i cant see the bottom number

Explanation:

You just add the numbers together

Answer:

x=3.

Step-by-step explanation:

3x+12=21.

3x=21-12.

3x=9.

x=3.

Answer:

x = 3

Step-by-step explanation:

3x + 12 = 21

- 12 -12

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

3x = 9

divide by 3 on both sides to isolate

x = 3

Answer:

-3x+3=5x+19

5x+3x=3-19

8x=-16

x=-2

Hope this helps <3

Answer:

x = -2

Step-by-step explanation:

we know,

y is common in both

so ,

-3x + 3 = 5x + 19

-3x +3-19=5x

-3x - 16 = 5x

-3x -5x = 16

-8x = 16

x = 16 / -8

x= -16/8

x= -2

also if you put value of x = -2 in both the expression you will get y = 9