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3 years ago

Find an expression which represents the sum of (8x - 7) and (10x + 3) in simplest terms.

Mathematics

1 answer:

Zigmanuir [339]3 years ago

8 0

80x + 24x × 70x + 21 = 3.4 when approximated

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Choose the equation that represents a line that passes through points (−1, 2) and (3, 1).

nlexa [21]

Answer:

(B) x + 4y = 7

Step-by-step explanation:

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3 years ago

A car purchased for $15,000 depreciates under a straight-line method in the

OlgaM077 [116]

Answer:

i can't send full page of it sorry

4 0

2 years ago

Is 14/35 and 21/42 proportional

PIT_PIT [208]

1.Simplified each one
2/5 (both divided by 7) , 1/2 (divided by 21)
2.Make them into integer
(2/5 )*(2/2)=4/10 , (1/2)*(5/5)=5/10
Now the dominators are the same ,you can just compare the numerators. It is 4:5

8 0

3 years ago

If -x < -y, then all of the following are true except?

Marysya12 [62]

Answer:

b, c, d are all false

Step-by-step explanation:

Let x=4, y=2. The given statement says ...

... -4 < -2 . . . . . a true statement.

Now, let's look at the answer choices.

... a. -4 < -2 . . . . true

... b. 2(4) < 2(2) . . . . false

... c. 4 +2 < 2 +2 . . . . false

... d. 4/2 < 2/2 . . . . false

Then "a" is true, and "b", "c", and "d" are false.

4 0

3 years ago

1. Two thousand dollars is invested at 5.5 percent interest compounded

Dafna11 [192]

Two thousand dollars is invested at 5.5 percent interest compounded

quarterly for 2 years. Then the amount is $ 2230.88

Solution:

Given that Two thousand dollars is invested at 5.5 percent interest compounded quarterly for 2 years

The formula for amount using compounded quarterly is given as:

$\text { Amount }=P\left(1+\frac{R / 4}{100}\right)^{4 T}$

Where, "p" is the principal sum

"R" is the rate of interest

"T" is the number of years

Here in this problem,

P = 2000 ; R = 5.5 ; T = 2 years

Plugging in values in formula we get,

$\text {Amount}=2000\left(1+\frac{\frac{5.5}{4}}{100}\right)^{4 \times 2}$

$=2000\left(1+\frac{1.375}{100}\right)^{8}$

On solving we get,

$=2000(1+0.01375)^{8}=2000(1.11544)=2230.88$

Hence the amount is $ 2230.88

4 0

3 years ago