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melisa1 [442]
3 years ago
5

EXPERT HELP I'LL GIVE BRAINLIEST: EXPLAIN THE ANSWER

Mathematics
1 answer:
RoseWind [281]3 years ago
3 0

Answer:

C

Step-by-step explanation:

If they were far apart then the samples' values change too much between tests so you cannot draw a good conclusion.

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Only do question 15<br><br> 50 points<br><br> Topic: Percentage
Varvara68 [4.7K]

Answer:

see below

Step-by-step explanation:

The total number of trees is

567+324+156+89+678 =1814

Percent fir = 567/1814 = .312568908=31.26 %

Percent pine = 324/1814 = .178610805=17.86%

Percent larch = 156/1814 =.085997795=8.60%

percent cedar = 89/1814 =.049062845=4.91%

Percent hemlock = 678/1814 = .373759647=37.38%

The total should be 100 %

31.26+17.86+8.60+4.91+37.38=100.01  ( rounding error because we rounded to the hundredths place)

4 0
3 years ago
Read 2 more answers
Find(x)=-x^2-4x+13<br> find f(3)
hichkok12 [17]

Answer: f(3)=-8

Step-by-step explanation:

f(x)=-x^2-4x+13\\f(3)=-(3)^2-4(3)+13\\f(3)=-(9)-12+13\\f(3)=-9+1\\f(3)=-8

5 0
3 years ago
The vertex of the equation of a parabola is y=4 (x-2)^2-1. what is the standard form of the equation
zhenek [66]
<span>y=4 (x-2)^2-1
y = 4(x^2 - 4x + 4) -1
y = 4x^2 - 16x + 16 - 1
y = 4x^2 - 16x + 15

answer
</span><span>standard form
</span>y = 4x^2 - 16x + 15
3 0
3 years ago
Roberta makes $9 an hour plus a 10.5% commission selling jewelry an hour shift in which she sells $880 worth of jewelry. How muc
timama [110]

Answer:

Roberta earns $164.4 on an 8 hr shift.

Step-by-step explanation:

In one hour  Roberta makes $9

So if she works for 8 hours she will be making

=> ( 9 X 8)$

=>72$

Also she earns a commission of 10.5% on selling a jewellery  worth $880

So 10.5% of 880 is

=> \frac{10.5}{100}\times 880

=>  0.105\times 880

=> 92.4

Hence  Roberta will be earning a total amount of

(72+ 92.4)

=>$164.4

3 0
4 years ago
A rectangular prism has a length of 14in, a height of 18in, and a width of 17in. What is
Gnesinka [82]

Answer:

4284in

Step-by-step explanation:

Because 14*18*17 is 4284

3 0
3 years ago
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