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3 years ago

1. Evaluate the expression -6.3a +2(a - b) for a = -2 and b = 1.1.

Mathematics

1 answer:

sasho [114]3 years ago

8 0

Answer:

D or 6.4

Step-by-step explanation:

-6.3*(-2) + 2(-2 - 1.1)

- 6.3 * - 2 = 12.6 Notice that the two minus signs become a +

(-2 - 1.1)= (-3.1) Multiply -3.1 * 2 = - 6.2

12.6 - 6.2 = 6.4

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Eduardo purchased a car for $18,500 with 6.5% sales tax, a freight charge of $450, a registration fee of $155, and an ownership

siniylev [52]

Answer:

17852.5$

Step-by-step explanation:

I already answer this in another part, but here it is againa:

In this case, all you need to do is sum all the amounts and take out the down payment of 2500$

First, the car of 18,500 with the 6.5% sale tax, it would be:

18,500 * (6.5/100) = 1202.5$

18500 + 1202.5 = 19702.5$

Now the charge and fees:

450+155+45 = 650$

Then:

19702.5 + 650 = 20352.5$

Finally, the down payment:

20352.5 - 2500 = 17852.5 $

6 0

3 years ago

4. What is the measure of angle ABD in the figure below?* D 2x A B с

katovenus [111]

Answer:

Measure of exterior angle ABD = 136°

Step-by-step explanation:

Given:

measure of ∠A = (2x + 2)°

measure of ∠C = (x + 4)°

measure of ∠B = x°

Find:

Measure of exterior angle ABD

Computation:

Using angles sum property

∠A + ∠B + ∠C = 180°

So,

(2x + 2) + (x + 4) + x = 180

4x + 6 = 180

4x = 176

x = 44

So,

measure of ∠B = x°

measure of ∠B = 44°

Measure of exterior angle ABD = 180 - measure of ∠B

Measure of exterior angle ABD = 180 - 44

Measure of exterior angle ABD = 136°

4 0

3 years ago

Estimate ∫20(4x2−2x)dx= using a left Reimann Summ and 4 equal subintervals.

dolphi86 [110]

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3 0

3 years ago

Answers for the 2 boxes please :)

Lapatulllka [165]

Answer:

-2,3

Step-by-step explanation:

x = -2

y = 3

..........

8 0

3 years ago

a corn vendor at a farmers market was selling a bag of 8 ears of corn for $2.56 anithert vendor was selling a bad of 12 for 4.32

maria [59]

Answer:

8 for 2.56

Step-by-step explanation:

THE ANSWER IS IN CENTS.

2.56 ÷ 8 = 0.32 per ear

4.23 ÷ 12 = 0.36 per ear

3 0

3 years ago