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Irina-Kira [14]
4 years ago
14

Which expressions are equivalent after simplifying? Check all that apply. (3.1a – 2.7b) + (1.5a – 4.9b) (2.3a + 0.2b) – 8b (–3.5

b + a) – (4.1b – 3.6a) –0.4b + (8b + 4.6a) 4.6a – 7.6b
Mathematics
2 answers:
ozzi4 years ago
6 0

Answer:

1,2,3

Step-by-step explanation:

fomenos4 years ago
4 0

Answer:

1st one 3rd one and last kne

Step-by-step explanation:

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Sarah is saving money to buy a microscope. She has saved $25 so far. That's 1/3 of the
seropon [69]

Answer:

X = $75

Step-by-step explanation:

X=total cost

x* (1/3) =$25

multiply by 3 on both sides

x=$75

4 0
3 years ago
Erin opened a savings account that earns 3% simple interest. If she deposits $2,750 and doesn't make any additional deposits or
Genrish500 [490]

Answer:

$3,245

Step-by-step explanation:

For a money saved at Simple Interest,

Amount =Simple Interest+Principal

Principal, P=$2750

Rate, r=3%

Time, T=6 Years

Simple \: Interest= \frac{Principal X Rate X Time}{100}

= \frac{2750X 3 X 6}{100}=$495

Therefore, Amount in Erin's Account after 6 years =2750+495

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6 0
3 years ago
1.Graph f(x) = -1.5x +6<br> 2.Graph f(x) = -1/2x-5
nalin [4]

Ans(1):

Given equation is f(x)=-1.5x+6

we can plug any number like x=0 and x=2 to find the f(x) also called y-value

plug x=0

f(x)=-1.5x+6 =-1.5*0+6 =0+6 =6

Hence first point is (0,6)

plug x=2

f(x)=-1.5x+6 =-1.5*2+6 =-3+6 =3

Hence first point is (2,3)

now we can graph both points then join them to get final graph of f(x)=-1.5x+6

---------------------

Ans(2):

We can repeat exactly same process for f(x) = -1/2x-5.

So the final graph will look like attached picture:


5 0
3 years ago
Which angle is complementary to ∠4 ?<br> a. ∠ 3<br> b. ∠ 2<br> c. ∠ 1<br> d. ∠ 6
GrogVix [38]

Answer:

a.Angle. 3

Step-by-step explanation:

Angle 3 is complementary to angle 4.

Because 70+20=90°

7 0
3 years ago
Chris answered 61 out of 66 questions correctly on a test. What is his test average to the nearest thousandth
mars1129 [50]
If you divide 61 by 66, you will get .9242424. The thousandths place is the third number, so you base it off of the four number. If the fourth number is under 5, the third number stays the same and all numbers after it disappear. If the number is above 5, the third number rounds up 1 and the rest disappear. Because the 3rd number is 4 and the 4th number is 2, you will get the answer of .924
4 0
3 years ago
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