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3 years ago

4. Write the equation that describes the line in slope-intercept form.

Mathematics

1 answer:

My name is Ann [436]3 years ago

7 0

Answer: Y=-3(1)+4

Explained: formula for slope is y=Mx+b. M being slope, x being the x value, and b is the y value.

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An isosceles triangle has angle measures 40, 40, and 100. The side across from the 100 angle is 10 inches long. How long are the

Sophie [7]

Answer:

the answer is C- 6.53 inches

Step-by-step explanation:

3 0

3 years ago

PLEASE HELP. WILL GIVE BRAINLIEST FOR CORRECT ANSWER

lozanna [386]

Are of shaded region = area of circle - area of segment
$= \pi {r}^{2} - ((\alpha \div 360) \times \pi \times {r}^{2} )$
$= \pi {r}^{2} (1 - \alpha \div 360)$
$r = 8.35 \\ \alpha = 100$
$= 158.1666....$
$rounding \: up$
$area \: of \: shaded \: region \: = 158.2 \: \: square ft$

6 0

3 years ago

A certain standardized test's math scores have a bell-shaped distribution with a mean of 530 and a standard deviation of 119. Co

kumpel [21]

Answer:

a) 68.2%

b) 31.8%

c) 2.3%

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 530

Standard Deviation, σ = 119

We are given that the distribution of math scores is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(test scores is between 411 and 649)

$P(411 \leq x \leq 649)\\\\= P(\displaystyle\frac{411 - 530}{119} \leq z \leq \displaystyle\frac{649-530}{119})\\\\= P(-1 \leq z \leq 1)\\\\= P(z \leq 1) - P(z < -1)\\= 0.841 - 0.159 = 0.682 = 68.2\%$

b) P(scores is less than 411 or greater than 649)

$P(x < 411 < x, x > 649)\\=1 = P(411 \leq x \leq 649)\\=1 - 0.682\\=0.318 = 31.8\%$

c) P(score greater than 768)

P(x > 768)

$P( x > 768) = P( z > \displaystyle\frac{768 - 530}{119}) = P(z > 2)$

$= 1 - P(z \leq 2)$

Calculation the value from standard normal z table, we have,

$P(x > 768) = 1 -0.977 = 0.023 = 2.3\%$

5 0

3 years ago

Let f(x) = x^2 − 3x − 7. Find f(−3).

IRINA_888 [86]

Answer:

Step-by-step explanation:

(-3)²-3(-3)-7

9+9-7

7 0

2 years ago

Read 2 more answers

A gift box in the shape of a rectangular prism measures 8 inches by 8 inches by 10 inches what is the least amount of wrapping p

Phantasy [73]

The first thing we must do for this case is to find the surface area of the rectangular prism.
We have then:
A = 2 * (l * h) + 2 * (h * w) + 2 * (w * l)
Where,
w: width
l: long
h: height
Substituting values we have:
A = 2 * (10 * 8) + 2 * (8 * 8) + 2 * (8 * 10)
A = 448 in ^ 2
Answer:
the least amount of wrapping paper needed to wrap the gift box answer is:
A = 448 in ^ 2

5 0

3 years ago

Read 2 more answers