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3 years ago

Could you please work out this and show answers if possible :)

Mathematics

1 answer:

g100num [7]3 years ago

5 0

Answer:‍ here !!

Step-by-step explanation:

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1) The quotient of a number and seven, increased by five.

Rashid [163]

(x/7) +5 =

Quotient means division, so the expression is to divide x and 7 and then add 5

3 0

3 years ago

A health magazine reported that 27% of adult males smoke cigarettes. A competing magazine thinks this claim is false. To test th

andre [41]

Answer:

a) what is the point estimate used to create this confidence interval?

[a] 0.22

[b] 0.28

[c] 0.26

[d] 0.25 <-----------------------------

b) what is the margin of error used to create this confidence interval?

[a] .06

[b] .03 <-----------------------------

[c] .035

[d] .055

c) based on the confidence interval, it is plausible that the true proportion of adult males who smoke cigarettes is 27%?

[a] yes <-------------------------------

[b] no

Step-by-step explanation:

8 0

3 years ago

Write an equation in slope intercept form that passes through the points (-4,3) and (0,2)

Daniel [21]

Answer:

$y = -\frac{1}{4}x +2$

Step-by-step explanation:

Slope-intercept form: y = mx + b

Slope formula: $\frac{y2-y1}{x2-x1}$

Given points: (-4, 3), (0, 2)

(0, 2) = (x1, y1)

(-4, 3) = (x2, y2)

To write the equation in slope-intercept form, we need to find the slope(m) and the y-intercept(b) of the equation.

First, let's find the slope. To do this, input the given points into the formula used to find slope:

$\frac{3-2}{-4-0}$

Simplify:

3 - 2 = 1

-4 - 0 = -4

$\frac{1}{-4}= -\frac{1}{4}$

The slope is $-\frac{1}{4}$ .

To find the y-intercept, input the slope and one of the given points(in this example I'll use point (0, 2)) into the equation and solve for b:

$2 = -\frac{1}{4} (0)+b$

2 = 0 + b

2 = b

The y-intercept is 2.

Now that we know the slope and the y-intercept, we can write the equation:

$y = -\frac{1}{4}x +2$

7 0

3 years ago

for every 1/2 cup portion of baby cereal you will need 4 oz of milk. how many ounces of milk will you need to prepare 20 portion

nlexa [21]

Answer:

80 oz

Step-by-step explanation:

20 portions times 4 oz is 80 oz

4 0

2 years ago

A.) 1,767.1 cm^3 B.) 235.6 cm^3 C.) 441.8 cm^3 D.)3,534.3 cm^3

mariarad [96]

Answer:

A.) 1,767.1 cm^3

Step-by-step explanation:

As in the question we are given Radius of circle 7.5 cm and we need to the volume of the sphere.

Using formula: 

$\dashrightarrow \: \: {\underline{\boxed{ \sf{Volume_{(Sphere)} = \dfrac{4}{3} \pi r^3 }}}} \\ \\$

Substituting the required values:

$\\ \dashrightarrow \: \: { \sf{Volume_{(Sphere)} = \dfrac{4}{3} \pi \times (7.5)^3 }} \\ \\ \\ \dashrightarrow \: \: \sf Volume_{(Sphere)} = \frac{4}{3} \times \pi \times 421.875 \\ \\ \\ \sf \dashrightarrow Volume_{(Sphere)} = \frac{4}{3} \times \frac{22}{7} \times 421.875 \\ \\ \\ \dashrightarrow \sf Volume_{(Sphere)} = \frac{37125}{21} \\ \\ \\ \dashrightarrow \sf Volume_{(Sphere)} \approx1767.1 \: {cm}^{2} \\ \\ \\$

Hence,

Volume of the sphere is 1,767.1 cm^3

4 0

2 years ago