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Fed [463]
3 years ago
14

Rebeckah answered 42 of the 60 questions correctly on a test. Which method should she use to find the percent of questions she a

nswered correctly?
Mathematics
2 answers:
Leno4ka [110]3 years ago
8 0

Answer:


Step-by-step explanation:

i think its 70 because you have to divide

klemol [59]3 years ago
4 0
Divide the total number correct, by the total number of questions on the test. 42/60=70%
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120% of 37 is what number?
xxMikexx [17]
120% of 37 is 44.4. Good luck!
4 0
3 years ago
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Please help me on this problem​
AleksandrR [38]
Find the perimeter of the scale artwork
P=2(l+w)
P=2(2.5+1.75)
=2(4.25)= 8.5 in

1 in = 0.5 ft
8.5in = 0.5(8.5)
=4.25ft = 51 in
the actual perimeter is 51 in or 4.25 ft
7 0
3 years ago
Find the value of a and of b for which<br>(a) the solution of x2 + ax &lt; b is<br>-2&lt;x &lt; 4​
KengaRu [80]

Answer: a = -2

b = 8

Step-by-step explanation:

Given :

x^{2} +ax

re - writing the equation , we have

x^{2} +ax-b

we need to find the value of a and b for which -2<x < 4 , this means that the roots of the quadratic equation are -2<x < 4.

The formula for finding the quadratic equation when the roots are known is :

x^{2} - sum of roots(x) + product of root = 0

sum of roots = -2 + 4 = 2

product of roots = -2 x 4 = -8

substituting into the formula , we have:

x^{2} -2x-8=0 , which could be written in inequality form as

x^{2} -2x-8

comparing with x^{2} +ax-b , it means that :

a = -2

b = 8

3 0
2 years ago
URGENTLY NEED THIS ASAP PLZ TYSM
Kazeer [188]

Answer:

fifth option

Step-by-step explanation:

Given

- 2(x - 5) ≤ 6x + 18 ← distribute left side

- 2x + 10 ≤ 6x + 18 ( subtract 6x from both sides )

- 8x + 10 ≤ 18 ( subtract 10 from both sides )

- 8x ≤ 8

Divide both sides by - 8, reversing the sign as a result of dividing by a negative quantity, thus

x ≥ - 1

3 0
3 years ago
Help please. Seriously. I've posted this question 2 times. I seriously need help on this, guys.
Svetradugi [14.3K]

Answer:

20s=m

Step-by-step explanation:

I really don't understand it that well but all that I can is that s can represent students that went on the trip, and each student's ticket cost is 20$, so 20*s=20s, but we are taking m as the total money collected, so we can end up saying that 20s=m, hope u understood :)

8 0
2 years ago
Read 2 more answers
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