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3 years ago

7

Idk how to write a word problem for multiplication

2 answers:

almond37 [142]3 years ago

8 0

First write a mathematical problem, for example:
1.2 + 1.2 = 2.4
Or
1 + 1 = 2
2 + 0.4 = 2.4

Then use a mathematical equation and make up a story, for example:
Sam's parents want him to rake the yard before he leaves for a movie with his friends. The yard has 3 sections. If one section takes an hour to rake and another section takes 20 minutes to rake, how long would the third section have to take if Sam finishes raking in 2.4 hours?

Ymorist [56]3 years ago

5 0

Hannah has 2.40 dollars and wants to buy 2 pairs of socks costing ar 1.20 each

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. Round $67.89 to the nearest dollar

Alex17521 [72]

Answer:

68$

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Multiplying Binomials: (−2h+9)(9h−2) = ?

oee [108]

(−2h+9)(9h−2)

-18h^2 + 4h + 81h - 18

Answer: -18h^2 + 85h - 18

5 0

3 years ago

Please help! :) I Really need help!

ivann1987 [24]

$3x^2(2x+3)(x-7)\\\\3x^2(2x^2 +3x-14x-21)\\\\3x^2(2x^2-11x-21)\\\\6x^4-33x^3-63x^2$

The answer is A.

$5(2x+3)^2\\\\5(4x^2+12x+9)\\\\20x^2+60x+45$

The answer is C.

3 0

4 years ago

Which ratio forms a proportion 12/15

ehidna [41]

Answer:

<em></em> $\frac{20}{25}$ <em></em>

<em></em>

Step-by-step explanation:

<em>See Attachment for Complete Question</em>

Given

$Ratio = \frac{12}{15}$

Required

Determine its equivalent proportion

$Ratio = \frac{12}{15}$

Factorize the given expression

$Ratio = \frac{3 * 4}{3 * 5}$

Divide the numerator and denominator by 3

$Ratio = \frac{4}{5}$

We apply the same steps to the given options as follows:

1.

$Ratio = \frac{21}{28}$

Factorize

$Ratio = \frac{7 * 3}{7 * 4}$

Divide the numerator and denominator by 7

$Ratio = \frac{3}{4}$

This is not an equivalent proportion of $\frac{12}{15}$

2.

$Ratio = \frac{20}{25}$

Factorize

$Ratio = \frac{5 * 4}{5 * 5}$

Divide the numerator and denominator by 5

$Ratio = \frac{4}{5}$

This is equivalent to $\frac{12}{15}$ because they both simplify to $\frac{4}{5}$

There's no need to check the last option;

<em>Hence, the option that answers the question is </em> $\frac{20}{25}$ <em></em>

8 0

3 years ago

Write the equation -4x^2+9y^2+32x+36y-64=0 in standard form. Show each step of the process.

Blizzard [7]

Answer:

The answer to your question is below

Step-by-step explanation:

-4x² + 9y² + 32x + 36y - 64 = 0

-4x² + 32x + 9y² + 36y = 64

-4(x² + 8x ) + 9(y² + 4x ) = 64 Factor coefficients

-4(x² + 8x + 4²) + 9(y² + 4x + 2²) = 64 - 64 + 36 Complete trinomials

-4(x + 4)² + 9(y + 2)² = 36 Factor trinomials

$\frac{-4(x+4)^{2} }{36} + \frac{9(y + 2)^{2} }{36} = \frac{36}{36}$

Divide by 36

$- \frac{(x+ 4)^{2} }{9} + \frac{(y + 2)^{2} }{4} = 1$ Simplify

3 0

3 years ago