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3 years ago

Given that

Mathematics

1 answer:

Crazy boy [7]3 years ago

7 0

Answer:

7x-2y=30

Find x when y=1

7x-2=30

7x=32

x= 32/7

or decimal form:

4.57 (rounded to the nearest hundredth)

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(Multiple choice/ Brainliest will be rewarded)

Bezzdna [24]

Answer:

1. h=1.5d. 2. 30cm in 20 days

Step-by-step explanation:

2. 20×1.5

4 0

3 years ago

Solve. Enter your answer as a mixed number. The driving distance from Alex's house to the museum is 6 9 10 miles. What is the ro

givi [52]

Answer:

13.8 miles

Step-by-step explanation:

The driving distance from Alex's house to the museum is $6\frac{9}{10}$ miles

Since the distance from his house to the museum does not change, his trip back is also $6\frac{9}{10}$ miles.

The Round-Trip Distance is the distance to and from the museum.

To determine this, there ate two approaches.

Add the distances together
Multiply the distance to by 2.

Approach 1

$6\frac{9}{10}+6\frac{9}{10}\\\\=\frac{69}{10} + \frac{69}{10} \\=\frac{69+69}{10}\\=\frac{138}{10}\\=13\frac{4}{5}=13.8$

Approach 2

$6\frac{9}{10} X 2 \\=\frac{69}{10} X 2\\=\frac{69X2}{10}\\=\frac{138}{10}\\=13.8 miles$

The round trip distance is 13.8 miles.

5 0

3 years ago

Read 2 more answers

Lixins monthly income consists of a basic salary of $500 and a commission of 4percent on her sales for the month.If her income i

Harman [31]

Answer:

Lixins monthly sales = $18,000

Step-by-step explanation:

Let x be the total sales.

Given:

Basic salary = $500

Commission on sales = 4% = 0.04

Monthly income = $1220

We need to find her sales for the month.

Solution:

First we write the equation for given situation:

$Total\ sales = Basic\ Salary + 0.04(Total\ sales)$

$S = 500 + 0.04x$

$1200=500+0.04x$

$0.04x=1220-500$

$0.04x=720$

$x = \frac{720}{0.04}$

$x = \$18,000$

Therefore, Lixins monthly sales are $18,000.

8 0

3 years ago

5. Priya can bike 150 meters in 20 seconds. At

kaheart [24]

Answer:

399.9 seconds

Step-by-step explanation:

First, do 20 divided by 150 to get the unit rate of how many seconds it takes for one meter and get 0.1333.

Next, multiply 0.1333 by 3,000 so you can get how long it takes for her to bike 3,000 meters and get 399.9.

7 0

4 years ago

ANSWER AND EXPLAIN I’LL MARK BRAINLIEST PLEASE ILL MARK BRAINLIEST

masya89 [10]

Answer:

160 meters

Step-by-step explanation:

Before I begin, note that distance = rate * time (or d = r * t)

To solve this problem, we need to find what point these two people have the same distance. (so Janiyah covers the same distance as Connor)

So, let's set the time that Janiyah takes as x (in seconds). So, he covers

d = r * t, or 8x meters

Then, Connor's equation would be

d = r * t

d = 5x + 60 (because he got a 60 meter headstart)

Because d is the same in both equations, to solve for the amount of time they run:

8x = 5x + 60

Subtract 5x from both sides.

3x = 60

x = 20

Then, to find Janiyah's distance (you can also use Connors because the two distances are equal), put x = 20 into 8x

8x = 8 * 20 = 160

So, Janiyah ran 160 meters.

Just in case, let's check if this is correct. Connor's distance equals Janiyah's, so

5x + 60 = 160

5 * 20 + 60 = 160

100 + 60 = 160

160 = 160

True.

So, the answers are correct.

I hope this helps! Feel free to ask any questions!

3 0

3 years ago