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3 years ago

PLEASE HELP!!!! I need the answer quick!!!! I’ll give you 20 points -3b+12=36

Mathematics

1 answer:

Levart [38]3 years ago

7 0

Answer:

b= -8

Step-by-step explanation:

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Four bagels and five muffins cost $9. Two bagels and ten muffins cost $15. How much does a bagel cost? How much does a muffin co

nadezda [96]

A muffin each cost 1.25 each.

Hope this helps!

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8 0

4 years ago

Suppose a bowler claims that her bowling score is not equal to 150 points, on average. Several of her teammates do not believe h

Juliette [100K]

Answer:

The test statistic (z-score) of this one-mean hypothesis test is z=1.823.

Step-by-step explanation:

The null and alternative hypothesis are:

$H_0: \mu=150\\\\H_a: \mu\neq 150$

The significance level is 0.05.

The sample size is n=22.

The sample mean is M=157.

The standard deviation is 18.

The z-score can be calculated as:

$z=\frac{M-\mu}{\sigma/\sqrt{n}}=\frac{157-150}{18/\sqrt{22}} =\frac{7}{3.84} =1.823$

The test statistic (z-score) of this one-mean hypothesis test is z=1.823.

4 0

3 years ago

Simplify completely the quantity 14 times x to the 5th power times y to the 4th power plus 21 times x to the third power times y

timofeeve [1]

We have to simplify the given expression:

$\frac{14x^5y^4+21x^3y^2}{7x^3y}$

Dividing the terms of the numerator by the given term of denominator individually, we get

= $\frac{14x^5y^4}{7x^3y}+\frac{21x^3y^2}{7x^3y}$

By using the laws of exponent, $a^m \div a^n = a^{m-n}$ , we get

= $\frac{7 \times 2 x^5y^4} {7x^3y} + \frac{7 \times 3 x^3y^2}{7x^3y}$

= $\frac{2 x^5y^4} {x^3y} + \frac{3 x^3y^2}{x^3y}$

= ${2 x^{5-3}y^{4-1}} + 3 y^{2-1}$

= ${2 x^{2}y^{3}} + 3 y$

Therefore, the simplification of the given expression is ${2 x^{2}y^{3}} + 3 y$ .

So, Option 3 is the correct answer.

6 0

3 years ago

Read 2 more answers

HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP

ivolga24 [154]

Answer:

Explanation:

according to the coordinates the triangles is right at the pair (2, -3)

the area of the triangle = height × base × 1/2

the height is the line passing through the pairs (-1, 6) and (2, -3)

h² = (2-(-1))²+(-3-6)²

h² = 3² + (-9)²

h² = 9 + 81

h² = 90

h = √90

the base is the line passing through the pairs (5, -2) and (2, -3)

b² = (2-5)²+(-3-(-2))²

b² = 3² + (-3+2)²

b² = 9 + 1

b² = 10

b = √10

A = h×b×1/2

A = √90×√10×1/2

A = √900×1/2

A = 30×1/2

A = 15 u²

5 0

3 years ago

I need the area please

Ostrovityanka [42]

The area is 448.5
(13 × 29) + (11 × 13)1/2

5 0

3 years ago