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3 years ago

Please solve these for 20 points : solving formulas for a variable

Mathematics

1 answer:

Digiron [165]3 years ago

6 0

6. (A/pi = r^2)
7. [(P - 2l)/2 = w]
8. [C/(2pi)= r]
9. (2A/h = b)
10. (E/c^2 = m)

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HELPPP ME PLEASEE!!!! ONLY NUMBER 7 ON HOW TO GRAPH AND NUMBER 9 PLEASEEE. I REALLY NEED THIS I START SCHOOL TOMORROW

lana66690 [7]

Answer:

7.) write 0 in one of the dashes and then you can count with fractions or decimals.

Draw an open circle (not filled in) on the 17/3 dash. Then draw the arrow going the same direction as #8.

9.)

$64 \leqslant 24 + x$

He still needs 40 oz to drink.

40 (less than or equal to sign) x

Step-by-step explanation:

*Find how many ounces in 8 cups

8 cups × 8 ounces = 64 ounces

**Figure out the sign

- it has to be equal to because his goal is to drink at least 64 oz.

- the sign has to also be greater than because he want to drink more than 64 if possible for him

***What goes on the other side of the sign?

- the 24 oz that he already drank plus the needed amount, let it be x for unknown

- the equation is 24 + unknown, or 24 + x

****Join all parts to get equation:

$64 \leqslant 24 + x$

*****isolate x

- subtract 24 to both sides to cancel out the 24 on the side with x

******Answer to how many oz he still needs:

40 (less than or equal to sign) x

Oops I had said it was greater than but it's less than because the x is supposed to be equal to or greater than 40 oz.

8 0

3 years ago

Tashia paid two months rent and a $500 security deposit when she signed her lease. In total, she paid $2,400.

fiasKO [112]

The equation that represents the scenario is 2x + 500 = 2400

The cost of one month rent is $950

She paid two months rent and a $500 security deposit when she signed for a lease. In total she paid $2400.

let

the cost of a month rent = x

Therefore,

<h3>Total cost Equation</h3>

2x + 500 = 2400

The cost of the one month rent can be calculated as follows:

2x + 500 = 2400
2x = 2400 - 500
2x = 1900
x = 1900 / 2
x = $950

Therefore, the equation that represent the scenario and cost of one month rent are as follows;

2x + 500 = 2400
cost of one month rent = $950

learn more on equation here: brainly.com/question/8057577

5 0

2 years ago

Pls help me asap

Sergio [31]

Answer:

Answer: a) 15 + 12y b) 14y - 27xy^2 + 18y^3c) 12ar + 54abr - 120brSolution:a) 5x3 + 6x2y15 + 6 x 2y= 15 + 12yb) 7x2y - 27xy^2 + 18y^3=14y - 27xy^2 + 18y^3c) 6a2r + 54arb - 60b2r= 12ar + 54abr - 120br

Step-by-step explanation:

6 0

3 years ago

Select all the expressions which are equivalent to –3(0.15 – 0.2 + 0.25p)

Sergio [31]

Answer:

–3(0.15 – 0.2 + 0.25p) = –3(0.15) + (–3)(0.2) + (–3)(0.25p)

Because the 2nd experssion is taking -3 times each number in the ( ).

hope this helps.

Step-by-step explanation:

4 0

3 years ago

Drag the vertices of the triangle below to draw a right triangle with side lengths 10, 24, and 26.

ra1l [238]

Answer:

15 ? :)

Step-by-step explanation:

6 0

3 years ago