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2 years ago

To solve the problem 7/13 + 5/8, what would you multiply the top and bottom of the first fraction by?

Mathematics

1 answer:

Vanyuwa [196]2 years ago

7 0

Answer:

104

Step-by-step explanation:

you have to find the least common multiple lcm between the bottom numbers. and since there is none before you just multiply the two together to get the same bottom number.

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GalinKa [24]

Must it be a scatterplot or no?

7 0

3 years ago

Read 2 more answers

Select True or False for each statement.

SSSSS [86.1K]

$\left( \dfrac 1 {64} \right)^{- 5/6} =64^{5/6} = (\sqrt[6]{64})^5 = 2^5 =32$

TRUE

$\sqrt[5]{36^4}=36^{4/5}$

which surely isn't 36. FALSE

$\sqrt{12} - \dfrac 2 5 \sqrt{75} = 2 \sqrt{3} -\dfrac 2 5 (5) \sqrt{3} = 0$

FALSE

For the fourth one we have a

$\sqrt{98b} + \sqrt{2b}$

which isnt

$10\sqrt{b}$

so this is FALSE.

$\dfrac{1}{(\sqrt 5 - \sqrt 6)^2}$

$= \dfrac{1}{(\sqrt 5 - \sqrt 6)^2} \cdot \dfrac{(\sqrt 5 + \sqrt 6)^2}{(\sqrt 5 + \sqrt 6)^2}$

$= \dfrac{(\sqrt 5 + \sqrt 6)^2}{ ( (\sqrt 5 - \sqrt 6)(\sqrt 5 + \sqrt 6))^2}$

$= \dfrac{(\sqrt 5 + \sqrt 6)^2}{( 5-6)^2}$

$=(\sqrt 5 + \sqrt 6)^2$

No fractions in that one so FALSE.

3 0

2 years ago

John drives 257 miles and uses 9 gallons of gas. How many miles per gallon did he get?

RUDIKE [14]

This problem can solve by the rule of three:
275 miles---------------9 gallons
x---------------------------1 gallons.

x=(275 miles * 1 gallons) / 9 gallons=28.55555.... miles≈28.56 miles.

Answer: 28.56 miles.

5 0

2 years ago

I need help on number 19.

8_murik_8 [283]

Add the fractions 1/4 and 3/8
First find the LCD of 1/4 and 3/8. 8 is the LCD.
Turn 1/4 into 2/8.
Now add.
3/8+2/8=5/8

Hope this helps!

6 0

3 years ago

Read 2 more answers

How do I find the value of x so f(x)=7

brilliants [131]

Solution:

Here we are given with a graph.

we have been asked to find the value of x for which $f(x)=7$

As we know that , to find the value of x for the given value of f(x), we need to look onto the vertical axis, and mark a dot on the given value now draw a line perpendicular to vertical axis so that it cut the given straight line, and where they intersect draw another line perpendicular to the horizontal axis and you will get the value where it crosses the horizontal axis.

Hence we get x=5, then f(x)=7.

3 0

2 years ago

Read 2 more answers