3 years ago

8(3+4) - 2•8 ÷ (5-3)

Mathematics

2 answers:

myrzilka [38]3 years ago

7 0

The correct answer is 48

motikmotik3 years ago

5 0

Answer:

Step-by-step explanation:

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16+2b-7b subtracting like terms

White raven [17]

It equals 16+5b
2b-7b= 5b

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3 years ago

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If costheta=4/5 then what is sec^2theta

DaniilM [7]

Answer:

$\sec^2(\theta)=\frac{25}{16}$

Step-by-step explanation:

Recall what the relationship between cosine and secant:

$\sec(\theta)=\frac{1}{\cos(\theta)}$

In other words, secant is the reciprocal of cosine.

So, if we know cosine, we only need to find its reciprocal to find secant.

We are given that cosine is:

$\cos(\theta)=\frac{4}{5}$

Then secant must be:

$\sec(\theta)=\frac{5}{4}$

So:

$\sec^2(\theta)=(\frac{5}{4})^2$

Square:

$\sec^2(\theta)=\frac{25}{16}$

And we're done!

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3 years ago

Share $600 between Anna and Raman in the ratio 3:7 and 1:4

Ulleksa [173]

Answer:

3 : 7 =>

Anna = $180

Raman = $420

1 : 4 =>

Anna = $120

Raman = $480

Step-by-step explanation:

Shares when ratio is 3 : 7

Anna : Raman = 3 : 7

Sum of ratio 10

Anna's share=

$\frac{3}{10} \times 600 = \$ 180$

Raman 's share=

$\frac{7}{10} \times 600 = \$ 420$

Shares when ratio is 1 : 4

Anna : Raman = 1 : 4

Sum of ratio = 5

Anna 's share =

$\frac{1}{5} \times 600 = \$ 120$

Raman's share =

$\frac{4}{5} \times 600 = \$ 480$

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3 years ago

Which is the slope of the line y = -3x + 2? A. -3 B. -2 C. 2 D. 3

alexandr1967 [171]

The answer is A -3.

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3 years ago

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15 points, Trigonometric ratios. Please write your answers as it says on the mandate, Thanks!

Alex73 [517]

Step-by-step explanation:

sec X = WX/XY = 37/12 = 3 1/12

or 3.083

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3 years ago

8(3+4) - 2•8 ÷ (5-3)​

8(3+4) - 2•8 ÷ (5-3)