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3 years ago

10 – 7x = 2 - 8x help :)

Mathematics

2 answers:

vladimir2022 [97]3 years ago

5 0

Answer:

I'm guessing you need to find x so x = -8

Step-by-step explanation:

So lets take it step-by-step

I'll try to explain my best so try to understand it as best as possible or I could simplify it smaller for you

10-7x=2-8x

We move all terms to the left:

10-7x-(2-8x)=0

We add all the numbers together, and all the variables

-7x-(-8x+2)+10=0

We get rid of parentheses

-7x+8x-2+10=0

We add all the numbers together, and all the variables

x+8=0

We move all terms containing x to the left, all other terms to the right

x=-8

So next time you get a problem like this remember, You move all terms to the left. You add all the numbers together, and all the variables. You get rid of parentheses. You add all the numbers together, and all the variables. And lastly you move all terms containing x to the left, all other terms to the right.

If you need any more help let me know :)

Rudik [331]3 years ago

4 0

10-7x=2-8x

We move all terms to the left:

10-7x-(2-8x)=0

We add all the numbers together, and all the variables

-7x-(-8x+2)+10=0

We get rid of parentheses

-7x+8x-2+10=0

We add all the numbers together, and all the variables

x+8=0

We move all terms containing x to the left, all other terms to the right

x=-8

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Find the area of a trapezium whose parallel sides are 28.7 cm and 22.3 cm and distance between parallel sides is 16 cm.

puteri [66]

Given:

The parallel sides of a trapezium are 28.7 cm and 22.3 cm.

The distance between parallel sides is 16 cm.

To find:

The area of a trapezium.

Solution:

The area of the trapezium is:

$A=\dfrac{a+b}{2}h$

Where, $a,b$ are parallel sides and $h$ is the vertical distance between the parallel sides.

Putting $a=28.7, b=22.3,h=16$ in the above formula, we get

$A=\dfrac{28.7+22.3}{2}\times(16)$

$A=\dfrac{51}{2}\times 16$

$A=51\times 8$

$A=408$

Therefore, the area of the trapezium is 408 square cm.

4 0

3 years ago

Q2. In a school, 60% of the students are girls. 50% of the girls walk to school. 20% of the boys walk to school. What percentage

Sphinxa [80]

Answer:

38%

Step-by-step explanation:

60 percent girls

50 percent of girls walk

50 percent take the bus

40 percent boys

20 percent walk

80 percent take the bus

If there are 100 people in the school

60 girls

30 girls take the bus

40 boys

8 boys walk

8+30=38

38% of the people walk to school

8 0

3 years ago

|Area of a square field is 617796cm² . Find length of its each side.

mariarad [96]

Answer:

length of its each side is 786 cm

Step-by-step explanation:

l² = 617796cm²

l = √617796

l = 786cm

7 0

3 years ago

Read 2 more answers

which of the following answer choices describes all the transformation found in the cubic function f(x)=-(x+2)3-5

Alona [7]

The cubic function is f(x) = x^3

You need to perform three transformations to the cubic function to obtain
f(x) = - (x + 2)^3 - 5.

Those transfformations are:

1) Shift f(x) = x^3, 2 units leftward to obtain f(x) = (x + 2)^3

2) reflect f(x) = (x + 2)^3 across the x-axis to obtain f(x) = - (x + 2)^3

3) shift f(x) = - ( x + 2) ^3, 5 units downward to obtain f(x) = - (x + 2)^3 - 5

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4 years ago

If a basketball player made 72 out of 85 free throws attempts how many could she make in 200 attempts

DedPeter [7]

Answer:

169

Step-by-step explanation:

Use a proportion:

72/85=x/200

Solve for x

(72)(200)=85x

x=(72)(200)/85

x=169.41≈ 169

She can make 169 of 200 free throws.

6 0

2 years ago