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4 years ago

3 1Evaluate the expression. 8 2+ 3.8 – 10 x 2

Mathematics

1 answer:

kherson [118]3 years ago

8 0

Answer: 65.8

Step-by-step explanation:

First multiply 10 x 2=20

then you add 82 and 3.8 which is 85.8

then you subtract 20 from 85.8 and you get 65.8

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“Solve each inequality and graph its solution. Show work.”

Cloud [144]

Answer:

$p$ or $p >6$

Step-by-step explanation:

Given

$|-5-p| > 11$

Required

Solve and graph

$|-5-p| > 11$

Remove absolute bracket

$-5 - p > 11$ or $-5- p$

Solve for p

$-p > 11 + 5$ or $-p < -11 + 5$

$-p > 16$ or $-p < -6$

Divide by -1

$p$ or $p >6$

See attachment for plot

3 0

3 years ago

Use Gauss's approach to find the following sum (do not use formulas):5+11+17+23...+83

LUCKY_DIMON [66]

Denote the sum by S. So

S = 5 + 11 + 17 + 23 + ... + 83

There's a constant difference of 6 between consecutive terms in S, so the 3 terms before 83 are 77, 71, and 65. So

S = 5 + 11 + 17 + 23 + ... + 65 + 71 + 77 + 83

Gauss's approach involves inverting the sum:

S = 83 + 77 + 71 + 65 + ... + 23 + 17 + 11 + 5

If we add terms in the same position in the sums, we get

2S = (5 + 83) + (11 + 77) + ... + (77 + 11) + (83 + 5)

and we notice that each grouped term on the right gives a total of 88. So the right side consists of several copies n of 88, which means

2S = 88n

and dividing both sides by 2 gives

S = 44n

Now it's a matter of determining how many copies get added. The terms in the sum form an arithmetic progression that follows the pattern

11 = 5 + 6

17 = 5 + 2*6

23 = 5 + 3*6

and so on, up to

83 = 5 + 13*6

so n = 13, which means the sum is S = 44*13 = 572.

8 0

3 years ago

Bobby sells sports videos to local businesses in his area. His daily wage, W, is based on the number of hours he works, H, at th

Mamont248 [21]

Answer:

W = 7.25H - 10

7 0

3 years ago

ANSWER ASAP FOR BRAINLIEST AWARD

Mashcka [7]

we can see that

semicircle is cut off from a rectangle

Area of rectangle:

length =8

width =14

area =length*width

$Area=14*8$

$Area=112$

Area of semicircle:

diameter=8

so, radius =4

$Area=\frac{1}{2} \pi r^2$

$Area=\frac{1}{2} \pi (4)^2$

$Area=25.13274$

now, we can find resultant area

$=112-25.13274$

$=86.86726$

so, option-C..........Answer

5 0

4 years ago

Read 2 more answers

Express 17.16 as a mixed number in lowest terms

pentagon [3]

Answer:

$17\frac{4}{25}$

Step-by-step explanation:

First write 0.16 is a fraction. Start by dividing 16 by 100.

$0.16\\=\frac{16}{100}\\=\frac{16}{100}*\frac{\frac{1}{4}}{\frac{1}{4}}\\=\frac{4}{25}$

Now adding the 17 to that fraction that is equivalent to 0.16:

$17+\frac{4}{25}\\=17\frac{4}{25}$

8 0

3 years ago

Read 2 more answers

3 1Evaluate the expression. 8​ 2​+ 3.8 – 10 x 2

3 1Evaluate the expression. 8 2+ 3.8 – 10 x 2