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dusya [7]
3 years ago
12

Help someone!! Thank you (:

Mathematics
1 answer:
mestny [16]3 years ago
8 0
1 hour = 70 miles
3 hours = 70 x 3
= 210 miles

The answer would be 210 miles.
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Luis has $60 in his savings account. He earns $12 per hour at his job. Luis plans to buy a bicycle for $240.
Lelu [443]

Answer:

15 hours

Step-by-step explanation:

8 0
3 years ago
The graph shows the relationship between the number of hours that Michelle has been driving and the distance that she has left t
nikitadnepr [17]

Answer:

(b) For each hour that Michelle drove, she traveled an additional 50 miles.

Step-by-step explanation:

Given

(x_1,y_1) = (0,350) ---- start

(x_2,y_2) = (7,0) --- end

Required

Which is true

(a): Journey = 6 hours

This is false, because:

x = x_2 - x_1

x = 7-0

x = 7 ---- 7 hours

(b): The average rate is 50 miles per hour

To do this, we calculate the slope (m) using:

m = \frac{y_2 -y_1}{x_2- x_1}

m = \frac{0 - 350}{7-0}

m = -\frac{350}{7}

m = -50

This means that the rate is 50 miles driven in 1 hour.

<em>(b) is correct</em>

<em></em>

<em>Others are incorrect</em>

7 0
3 years ago
How many solutions does this<br>quadratic have?<br>f(x) = -4x2 + 12x - 9​
BartSMP [9]

Answer:

one, (1.5, 0)

Step-by-step explanation:

4 0
3 years ago
6(-2.3x- 5) + (4x + 11)
Oxana [17]

x = -1.93877551

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7 0
4 years ago
Bella earned $216 in interest after 4 years on a principal of $1,500. What is her interest rate?
katrin2010 [14]

Answer:

R = 148.6111%/year

Equation:

r = (1/t)(A/P - 1)

Calculation:

Solving our equation:

r = (1/4)((1500/216) - 1) = 1.48611111

r = 1.48611111

Converting r decimal to R a percentage

R = 1.48611111 * 100 = 148.6111%/year

The interest rate required to get a total amount, principal plus interest, of $1,500.00 from simple interest on a principal of $216.00 over 4 years is 148.6111% per year.

4 0
3 years ago
Read 2 more answers
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