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chubhunter [2.5K]
3 years ago
12

8. It took Sharon 85 minutes to wash three cars. She spent x minutes on each car and 10 minutes

Mathematics
1 answer:
Yuliya22 [10]3 years ago
8 0

Answer:

c. 25 minutes

Step-by-step explanation:

3x + 10 = 85

3x = 85 - 10

3x = 75

x = 25

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A school P is 16km due west of a school Q. what is the bearing of Q from P​
Irina-Kira [14]

Answer:

16Km due east of school P

Step-by-step explanation:

Given

A school P is 16km due west of a school Q

Thus, we can say that distance PQ = 16 km.

________________________________

now we have to find  the bearing of Q from P​

As distance is same

distance PQ = distance QP

Thus,

Distance will remain same of 16 km.

For direction,

If Q is west of P, then P will be east of QP------------------>Q

as shown in figure P is west of Q,

now from point P , Q is west P.

Thus,

Bearing of  School Q from P is 16Km due east of school P

7 0
3 years ago
Your school wants to take out an ad in the paper congratulating the basketball team on a successful season, as shown to the righ
Greeley [361]

Answer:

(7  -  x)(4  -  x) \\ 28  -  7x  -  4x   +  x {}^{2}  \\ x {}^{2}   - 11x   +  28 = 0 \\ x {}^{2}   -  7x  - 4x + 28 = 0 \\ x (x - 7) - 4(x - 7 )= 0 \\ (x - 4)(x - 7) = 0 \\

the value of x is 7 or 4

4 0
3 years ago
Read 2 more answers
The time a projectile spends in the air can be modeled by the equation t² -t - 8 = 0, in which t represents the amount of time t
s2008m [1.1K]

Answer:

(t - 4)(t + 2) = 0  

Step-by-step explanation:

The general formula for a quadratic expression is

y = ax² + bx + c

Your expression is

y = t² - 2t - 8 = 0

By comparison, we see that

a = 1; b = -2; c = -8

1. Find two numbers that multiply to give ac and add to give b.

In this case, find two numbers that multiply to give -8 and add to give -2.

It helps to list the factors of  -8.

They are ±1, ±2, ±4, and ±8

After a little trial and error, you should find the numbers -4 and +2.

-4 × 2 = -8, and -4 + 2 = -2)

2. Rewrite the middle term with those numbers

t² -4t + 2t - 8 = 0

3. Factor the first and last pairs of terms separately

t(t - 4) +2(t - 4) = 0

4. Separate the common factor

The common factor is t - 4.

(t - 4)(t + 2) = 0

8 0
3 years ago
In a recent year,23.6% of all registered doctors were females. If there were 48,700 female registered doctors that year, what wa
Burka [1]

0.236d = 48700

d = 48700/0.236

d = 206355.932

Around 206,356 doctors.

6 0
3 years ago
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What is 70% of 45?????????
borishaifa [10]

Answer:

31.5

Step-by-step explanation:

4 0
3 years ago
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