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4 years ago

George studied 3/4 hour on monday and 7/8 hour on tuesday. how long did he study altogether on both days?

1 answer:

5 0

$\dfrac{3}{4}+\dfrac{7}{8}=\dfrac{3\cdot2}{4\cdot2}+\dfrac{7}{8}=\dfrac{6}{8}+\dfrac{7}{8}=\dfrac{6+7}{8}=\dfrac{13}{8}=\dfrac{8+5}{8}=\dfrac{8}{8}+\dfrac{5}{8}=1\dfrac{5}{8}\\\\Answer:\boxed{1\frac{5}{8}\ hour.}$

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Lydia bought a shirt at 20% off its retail price of $40. She paid 5% tax on the price after the discount. How much did Lydia pay

lys-0071 [83]

$33.60. 20% of 40 is 8. 40 minus 8 is 32. 5% of 32 is 1.60, with a sum of 33.60, the total for the shirt.

7 0

4 years ago

I am multiple of 20 i have 3 digits my hundreds digit and tens digit add to make 9 half of me is less than 100 what am i

ASHA 777 [7]

Answer:

180

Step-by-step explanation:

Given :

the number has three digits

it is multiple of 20

hundreds digit and tens digit add to make 9

half of it is less than 100.

I suppose 180 can correctly fit into all above criterions

It is 3 digit number. 1+8 =9, 180/2 =90 which is less than 100.

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3 years ago

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Aneli [31]

The answer is D- 512

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3 years ago

1/56 divided by -30 write fractions is simplest form

Nady [450]

Simplified form of 1/56 divided by -30 is $=-\frac{1}{1680}$

Step-by-step explanation:

We need to solve 1/56 divided by -30 in simplest form.

Solving:

Writing in mathematical form:

$\frac{1}{56}\div -30$

Converting division symbol into multiplication and taking reciprocal of -30

$=\frac{1}{56}\times \frac{1}{-30}$

Simplifying:

$=\frac{1}{56*-30}$

$=-\frac{1}{1680}$

So, simplified form of 1/56 divided by -30 is $=-\frac{1}{1680}$

Keywords: Solving Fractions

Learn more about Solving Fractions at:

#learnwithBrainly

4 0

3 years ago

X^2+ 17x+91=0<br> Help please!!

Morgarella [4.7K]

Answer:

x^2+17x+91=0

a = 1; b = 17; c = +91;

Δ = b2-4ac

Δ = 172-4·1·91

Δ = -75

Delta is less than zero, so there is no solution for the equation

Step-by-step explanation:

6 0

3 years ago