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3 years ago

Write a word problem for an expression that is three times as great as (15+7). Then write the expression.

Mathematics

2 answers:

Setler79 [48]3 years ago

6 0

Answer:

the expression is 3(15+7). An word problem could be there are 15 apples and 7 bananas. Someone needs to buy 3 times the amount of those. This is represented by that expression.

Step-by-step explanation:

aksik [14]3 years ago

4 0

Three siblings, caroline, jake, and helen all have 15 dollars from doing their chores. their parents gave them an additional 7 dollars for their good grades that week. how much money do they have all together.

3(15+7)=66

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A student thought she had 3 missing assignments, she actually had 5 missing assignments. What was her percent error?

Licemer1 [7]

Answer:

0.6%

Step-by-step explanation:

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3 years ago

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VMariaS [17]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Use linear approximation to approximate √25.3 as follows.

Sophie [7]

The idea is to use the tangent line to $f(x)=\sqrt x$ at $x=25$ in order to approximate $f(25.3)=\sqrt{25.3}$ .

We have

$f(x)=\sqrt x\implies f(25)=\sqrt{25}=5$

$f'(x)=\dfrac1{2\sqrt x}\implies f'(25)=\dfrac1{10}$

so the linear approximation to $f(x)$ is

$L(x)=f(5)+f'(5)(x-5)=5+\dfrac{x-5}{10}=\dfrac x{10}+\dfrac92$

Hence $m=\frac1{10}$ and $b=\frac92$ .

Then

$f(25.3)\approx L(25.3)=\dfrac{25.3}{10}+\dfrac92=\boxed{7.03}$

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3 years ago

In April, The Kazbaas drove 760 miles in their tour van.

DedPeter [7]

9514 1404 393

Answer:

£135.98

Step-by-step explanation:

$(760\text{ mi})\dfrac{1\text{ gal}}{29.5\text{ mi}}\cdot\dfrac{4.55\text{ L}}{1\text{ gal}}\cdot\dfrac{\pounds1.16}{1\text{ L}}=\dfrac{760\cdot4.55\cdot\pounds1.16}{29.5}\\\\=\boxed{\pounds135.98}$

It cost £135.98 for petrol in April.

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2 years ago

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Law Incorporation [45]

Answer:

-2

Step-by-step explanation:

$y = - 2x$

the line is going down meaning its a negative and to find the slope do rise over run

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3 years ago