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CaHeK987 [17]
3 years ago
9

I need help on how to do this. Please help

Mathematics
1 answer:
Sveta_85 [38]3 years ago
8 0
Hi there! I can help you! To solve this question, we can write and solve a proportion. Candida ran 100 yards in 12.7 seconds and the timekeeper ran 100 yards in 11.4 seconds. Let's start with Candida.  We could solve this by setting up the proportion to make it look like this: 100/12.7 = 220/x. You do this, because we're looking for the amount of time it would take for Candida to run 220 yards. Le'ts cross multiply the values. When you do that, you get 2,794 = 100x. Now, divide each side by 100 to isolate the "x". When you do, you get x = 27.94. x = 27.94. We found Candida's time. Now, let's look for the other person's time. Set up a proportion again. 100/11.4 = 220/x. We are looking for the other person's time. Repeat the steps. Cross multiply the values in order to get 2,508 = 100x. Now, divide each side by 100 to isolate the "x". When you do, you get 25.08. x = 25.08. We found the other person's time. Here are the answers easier to read.

Amount of time to run 220 yards

Candida: 27.94 seconds
Other person's time: 25.08 seconds
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Write the if/else statement as the conditional expression that performs the same option result = x < y ? x * 5 : a b;
Semenov [28]

The conditional statement is

if x < y:

  result = x * 5

<h3>How to write the if/else statement as the conditional expression that performs the same option?</h3>

The statement is given as:

result = x < y ? x * 5

The above means that,

the variable result is assigned  x * 5 if x < y

So, the conditional statement is

if x < y:

  result = x * 5

Read more about conditional statement at

brainly.com/question/11073037

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8 0
2 years ago
Please answer this correctly
OlgaM077 [116]

Answer:

$21.57

Step-by-step explanation:

4.5 (1.22) + 0.8 (1.70) + 4.6 (3.20) =

5.49 + 1.36 + 14.72

21.57

4 0
3 years ago
(1+v)(v-7) i need help to solve this question
kramer
(1 + v)(v - 7)

1*(v - 7) + v(v - 7)

1*v - 1*7 + v*v - v*7

v - 7 + v² - 7v

v² - 7v + v - 7

 v² - 6v - 7

I hope this helps.
4 0
3 years ago
Mary bought a pair of jeans on sale for 25% off. The original price for jeans was $79. What was the sale price before tax? Expla
TEA [102]
<h3>Answer:  $59.25</h3>

========================================================

Explanation:

There are two approaches

Method 1

25% of 79 = 0.25*79 = 19.75

Mary saves $19.75 and the price before tax is 79 - 19.75 = 59.25

-----------------------------

Method 2

She saves 25% so she must pay the remaining 75%

75% of 79 = 0.75*79 = 59.25

This is a slight shortcut, and it's very useful when it comes to chaining multiple discounts together.

5 0
2 years ago
Given f(x) = -5x + 1. What is f(-3)?
babunello [35]

Answer:

f(-3) =16

Step-by-step explanation:

f(x) = -5x + 1

f(-3) means let x=-3

Substituting x=-3 into the equation

f(-3) = -5 (-3) +1

Multiplying -5 and -3

f(-3) = 15+1

f(-3) =16

7 0
3 years ago
Read 2 more answers
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