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3 years ago

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I WILL MARK BRANNIEST Painter takes 2 3/5 hours to paint a wall how many hours will the painter take to paint 8 walls if she wor

ks at the same rate?
A 204/5
B16 3/5
C 13/5
D 101/5

1 answer:

SVETLANKA909090 [29]3 years ago

3 0

Answer:

A: 20 4/5

Step-by-step explanation:

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You and your friend live 12 miles apart. you leave home at the same time and travel ttoward eacth other.you walk at the rate of

mr Goodwill [35]

Step 1: Assign variable for the unknown that you need to find.

$d_w \; \rightarrow \; Distance \; you \; traveled \; by \; walk \; in \; miles \\ d_c \; \rightarrow \; Distance \; traveled \; by \; your \; friend \; using \; bicycle \; in \; miles \\ t \; \rightarrow \; Time \; Taken \; in \; hours$

Step 2: List the given details

Distance between you and your friend is 12 miles. It means the total distance traveled by you by walk and your friend using bicycle when both travel towards each other to meet in 't' hours

Equation 1:

$d_w+d_c=12$

Your Walking rate and your friends Cycling rate is given below:

$r_w=4mph\\r_c=11mph$

Step 3: Set up an equation using the relationship between distance, time and rate.

$Distance=Rate \times Time$

$d_w=r_w \times t=4t \\\\ d_c = r_c \times t = 11t$

Substituting the above in equation 1

$4t+11t=12 \\ Combining \; Like \; Terms \\\\ 15t=12 \\ Dividing \; 15 \; on \; both \; sides \\\\ 15t \div 15=12 \div 15 \\\\ t=0.8 hours$

Distance traveled by you by walking from home and distance travelled by your friend in cycle in 0.8 hours is given below:

$d_w=4t=4(0.8)=3.2miles \\\\ d_c=11t=11(0.8)=8.8miles$

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3 years ago

95% of what number is 19?

Setler79 [48]

95% of 20 is 19

Convert your percentage into a decimal:
$\frac{95}{100} = 0.95$

Divide 19 by your decimal:
$19 \div 0.95 = 20$

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Setler [38]

Answer:

x=5y-35

Step-by-step explanation:

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