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2 years ago

9

[16 pts please help]

1 answer:

qaws [65]2 years ago

8 0

Answer:

Becky, Fran, Robert

Step-by-step explanation:

Fran: 140 ÷ 20 = 7

Robert: 150 ÷ 25 = 6

Becky: 120 ÷ 15 = 8

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The ratio of the number of left-handed batters to the number of right handed batters is 5:8. There are 45 left-handed batters. f

Anuta_ua [19.1K]

Answer=15:39

Step1(find the number of right handed batters)

Left-handed batters=45

5 45
__=___
8 x

Cross multiply
5x=360
divide both sides by 5
x=72
Right-handed batters=72

Step 2 (find the number of total batters)
total batters=45+72=117

Step3 (find the ratio of left handed batters to total batters)

Left-handed batters to total batters= 45/117
45/117 can be shortened to 15/39

Answer=15:39

8 0

3 years ago

If 8(x + 2) - 3( x - 4) = 6( x - 7) + 8, then x is what?

Lelechka [254]

Answer:

62

Step-by-step explanation:

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5 0

3 years ago

What’s the distance between the points (-7,-4) and (-5,-4)?

Radda [10]

Answer:

2 units

Step-by-step explanation:

Distance

$= \sqrt{(-4 - (-4))^2 + (-7 - (-5))^2}$

$= \sqrt{0^2 + (-2)^2}$

$= \sqrt{(-2)^2}$

$= 2$

3 0

3 years ago

Easy math problem plz Halp

yan [13]

The answer is 19.5

You add all the numbers to get 273 and divide by the amount of dots which is 14 to get 19.5

6 0

3 years ago

Read 2 more answers

Find the exact value of the given expression.<br> sin(2cos^-1(5/13))

xeze [42]

Answer:

+120/169 or -120/169

Step-by-step explanation:

let $cos^{-1}[\frac{5}{13} ] = \alpha$

where, alpha is some angle that satisfies the assumed condition.

so, $cos\alpha= 5/13$

[ taking cos to the other side or applying cos on both sides]

now, substitute this in the given expression

$sin(2cos^-1(5/13)) = sin(2\alpha )$

as sin $\beta$ = $+ or -\sqrt{1-(cos\beta) ^{2}$

[by general trigonometry formula: $cos^{2}[\beta] +sin^{2}[\beta]=1$ ]

so if $cos\alpha= 5/13$ , we can get sin $\alpha$ from the above formula as + or - 12/13

(because, after taking square root on both sides we keep + or -]

as, sin $2\beta = 2*sin[\beta ]*cos[\beta ]$

[by general trigonometry formula]

here, now $sin[2\alpha ]=2*(+or- 12/13)*5/13\\$

so, the final value can be 120/169 or -120/169.

4 0

3 years ago