Ask question

Ask question

All categories

3 years ago

11

Write an equation for the following situation. DO NOT SOLVE IT. (5 pts)

1 answer:

Phantasy [73]3 years ago

4 0

Answer:

425 = 8.5x + 55

Step-by-step explanation:

His goal is $425, so that's what we want to equal. He saves $8.50 per week, so that's our variable and coefficient - x represents the number of weeks. Finally, he already has $55, so you add it to whatever he earns per week.

You might be interested in

A person jogged 10 times along the perimeter of a rectangular field at the rate of 12 kilometers per hour for 30 minutes. If fie

balu736 [363]

Answer:

20,000m²

Step-by-step explanation:

If they jog 12 km/h for half an hour, they have covered.

12 X 0.5 = 6km in 10 circuits. Making 1 perimeter

6 / 10 =0.6 km (600 m).

To determine area we need to convert this perimeter to length and width. We know that it is a rectangle, with 2 equal widths and 2 equal lengths, and the length is twice the width.

So L = 2W

Perimeter = 2W + 2L

600 m = 2W + 2(2W)

600 m = 6W

W = 100 m

L = 200 m

Area = 100 X 200 = 20,000 m²

4 0

3 years ago

A spinner is numbered from 1 through 10 with each number equally likely to occur. What is the probability of obtaining a number

emmainna [20.7K]

Answer:

i believe its 5/10 or 1/2

Step-by-step explanation:

5 0

2 years ago

Jika garis 4x+ay = 8 dan ay=9x + 5 saling tegak lurus,maka nilai a

barxatty [35]

We are given equations as

$4x+ay=8$

Firstly, we will write in slope intercept form of line

y=mx+b

$4x+ay=8$

Subtract both sides by 4x

$4x+ay-4x=-4x+8$

$ay=-4x+8$

now, we can divide both sides by a

$y=-\frac{4}{a} x+\frac{8}{a}$

we can find slope

so, we get

$m_1=-\frac{4}{a}$

we are given second equation as

$ay=9x+5$

Firstly, we will write in slope intercept form of line

y=mx+b

divide both sides by a

$y=\frac{9}{a} +\frac{5}{a}$

we can find slope

$m_2=\frac{9}{a}$

we are given both lines are perpendicular

so, the multiplication of their slopes must be -1

$m_1\times m_2=-1$

we can plug values

$-\frac{4}{a}\times \frac{9}{a}=-1$

now, we can solve for a

$\frac{36}{a^2}=-1$

Multiply both sides by a

$\frac{36}{a^2}\times a^2=1\times a^2$

$36= a^2$

now, we can solve for a

we get

$a=-6,a=6$ ...............Answer

4 0

4 years ago

Evaluate a^7 - 4b for a =3 and b= -1

Papessa [141]

Answer:

2187+4

= 2191

Step-by-step explanation:

plz brainliest :)

3 0

3 years ago

Read 2 more answers

A researcher reports that the mean time it takes to complete an experimental task is 1.4 ± 8.0 (M ± SD) s. If the null hypothesi

Marina CMI [18]

Answer:

The Cohen's d effect size is 0.05.

Step-by-step explanation:

The Cohen's d effect size is a numerical value that indicates the standardized difference between two means.

It is provided that the mean time to complete an experimental task reported by the researcher is,

$(\bar x\pm s)=(1.4\pm8.0)$

Since the standard deviation of the population is not provided we will use a one-sample <em>t</em> - test to perform the analysis.

The formula of Cohen's d effect size in case of one-sample <em>t</em> - test is:

$d=\frac{\bar x-\mu}{s}$

Compute the value of Cohen's d effect size as follows:

$d=\frac{\bar x-\mu}{s}=\frac{1.4-1.0}{8}=\frac{0.4}{8}=0.05$

Thus, the Cohen's d effect size is 0.05.

7 0

3 years ago