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astra-53 [7]
2 years ago
10

The equation 6y = 30 - 8x has solutions of (b, 1) and (a, b). What are the values of a and b?

Mathematics
1 answer:
victus00 [196]2 years ago
6 0

The values of a and b are a = \frac{3}{2} and b = 3, respectively.

In this question we need to solve the linear equation for each point, first for (x,y) = (b, 1) and later for (x,y) = (a, b).

If we know that (x,y) = (b, 1), then the value of b is:

6 = 30-8\cdot b

8\cdot b = 24

b = 3

If we know that (x,y) = (a, b) and b = 3, then the value of a is:

6\cdot b = 30 - 8\cdot a

18 = 30-8\cdot a

12 = 8\cdot a

a = \frac{3}{2}

The values of a and b are a = \frac{3}{2} and b = 3, respectively.

To learn more on linear functions, we kindly invite to check this question: brainly.com/question/5101300

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Alex777 [14]

Complete question :

A zoologist is interested in whether climate affects how high kangaroos can jump. In a random sample of gray kangaroos from an Australian forest, he found the mean jump height was x¯=286 inches with a margin of error of 15 inches.

Construct a confidence interval for the mean jump height of gray kangaroos.

Answer:

(271, 301)

Step-by-step explanation:

Given that:

Mean (x¯) = 286

Margin of Error = 15 inches

The confidence interval :

(Mean - Margin of Error), (mean + margin of error)

(286 - 15), (286 + 15)

(271, 301)

Hence confidence interval equals : (271, 301)

5 0
3 years ago
Four friends were born in consecutive years. The sum of their ages is 62.
Bas_tet [7]

Answer:

4+62=66

Step-by-step explanation:

3 0
3 years ago
Solve the combined inequality x + 3 > -5 and -4x ≥ -16 showing all of your work
ad-work [718]
Well for the first one you have to subtract 3 on both sides so that would make the equation x > -8 (because a negative subtracting a positive is basically a negative plus negative) and so your equations done.  For the second one you divide both ides by -4 so your equation would be x < 4 (the sign would be less then or qual to because you divided by a negative)
5 0
3 years ago
Figure EFGH on the grid below represents a trapzoidal plate at its starting position.
marusya05 [52]
90 degree rotation (CCW):
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3 0
3 years ago
Solve for x in the triangle<br> A 25.6<br> B 27.8<br> C 45.6<br> D 64.4
labwork [276]

Answer:

The measure of angle x is 64.4\°

Step-by-step explanation:

To find the measure of angle X, apply the law of cosines

The law of cosines states that

c^{2}=a^{2}+b^{2}-2(a)(b)cos(C)

In  this problem we have

a=19\ cm

b=25\ cm

c=24\ cm

C=x\°

substitute

24^{2}=19^{2}+25^{2}-2(19)(25)cos(C)

576=986-950cos(C)

cos(C)=(986-576)/950

C=arccos[(986-576)/950]=64.4\°

Therefore

The measure of angle x is 64.4\°

7 0
4 years ago
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