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3 years ago

Please help !!evaluate the algebraic expression 7x - 5 when x = 4/7

Mathematics

1 answer:

Ugo [173]3 years ago

6 0

-1

7(4÷7)-5

Write the division as a fraction

$7 \times \frac{4}{5} - 5$
4-5

-1

hope it helps..

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52 998 x 67 = (1,000 - 998) x 67

Tresset [83]

Given:

$\to \bold{52,998 \times 67 = (1,000 - 998) \times 67}$

To find:

Proving

Solution:

$\to \bold{52,998 \times 67 = (1,000 - 998) \times 67}$

Solving L.H.S part:

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Solving R.H.S part:

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What are the solutions to the following equation?

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Rajan bought 5 copies of a book to give as

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Answer:

Step-by-step explanation:

the original price was the one she started at

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3 years ago

Of 10 test scores, eight are less than or equal to 82. What is the percentile rank of a test score of 82?

sdas [7]

Answer:

80%

Step-by-step explanation:

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3 years ago

Help I’ll give you 30 points

Gnesinka [82]

Answer:

a) 16.25 centimeters

b) 6.8 centimeters

Step-by-step explanation:

We can set up a proportion for both of these problems.

a) Look at the longest side of each triangle. We can set up a fraction: 7.2/18. We can also set up a fraction for XZ and PR:

6.5/x

x represents the length you're trying to find.

Since the triangles are similar, we have an equation:

7.2/18=6.5/x

Cross multiply

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XZ is 16.25 centimeters long.

We can do same thing:

7.2/18=x/17

Cross multiply

6.8

QR is 6.8 centimeters long.

Hope this helps!

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