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kicyunya [14]
3 years ago
11

I need help fast with the first question in the page which is the find algebraically in R

Mathematics
1 answer:
ch4aika [34]3 years ago
3 0

Answer:

2x²+5x-6 = 0

using the quadratic formula

x = 0.886 and x= -3.386

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Suzette ran and biked for a total of 44.75 mi in 4 h. Her average running speed was 6.5 mph and
vaieri [72.5K]

Suzette ran for 1.5 hours and biked for 2.5 hours.

a. Let x = total hours Suzette ran.

Let y = total hours Suzette biked.

The equation to solve the question will be:

x + y = 4 ....... i

6.5x + 14y = 44.75 ....... ii

b. x + y = 4 ....... i

6.5x + 14y = 44.75 ....... ii

From equation i, x = 4 - y

Put x = 4-y into equation into equation ii

6.5x + 14y = 44.75

6.5(4 - y) + 14y = 44.75

26 - 6.5y + 14y = 44.75

Collect like terms

-6.5y + 14y = 44.75 - 26

7.5y = 18.75

Therefore, y = 18.75/7.5

y = 2.5

Therefore, she bikes for 2.5 hours

Since x + y = 4

x = 4 - y

x = 4 - 2.5

x = 1.5

She ran for 1.5 hours.

Read related link on:

brainly.com/question/24578032

5 0
3 years ago
Read 2 more answers
Find the unknown angle measures.<br> А<br> с<br> 730<br> B<br> mZA-<br> m2-0<br> O
Ksju [112]

Answer:

angle a is 73 and angle c is 180-(73+73)=34

6 0
4 years ago
Suppose a car travels at a rate of 60 miles per hour for 3 hours. How many miles does the car travel?
nataly862011 [7]
Ok lol I was going to put 180 but if you got it than that’s fine.
3 0
3 years ago
Two rectangle are similar, the first 4 in wide and 15 in long. The second is 19 in. Wide. Find the length of the second rectangl
AleksandrR [38]

Answer:

the length of the second rectangle is 33.75 in

Step-by-step explanation:

The computation of the length of the second rectangle is as follows

Let us assume the length of the second triangle be x

Now

The equation would be

4 ÷ 15 = 9 ÷ x

Now do the cross multiplication

4x = 15 × 9

4x = 135

x = 33.75 in

Hence, the length of the second rectangle is 33.75 in

4 0
4 years ago
Segment HK is 24 inches long.
Sunny_sXe [5.5K]
The longitude of segment HL is 12 inches because its the half of segment HK which is 24.
6 0
3 years ago
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