Ask question

Ask question

All categories

3 years ago

11

Solve for ddd. Give an exact answer. 0.5(7d+4)=7-1.5d0.5(7d+4)=7−1.5d0, point, 5, left parenthesis, 7, d, plus, 4, right parenth

esis, equals, 7, minus, 1, point, 5, d=

1 answer:

LuckyWell [14K]3 years ago

8 0

Answer:

d = 1

Step-by-step explanation:

The equation given is:

0.5(7d + 4) = 7 - 1.5d

Expand the bracket:

3.5d + 2 = 7 - 1.5d

Collect like terms:

3.5d + 1.5d = 7 - 2

5d = 5

d = 5 / 5 = 1

You might be interested in

The asymptote function f(x)=3^x+4 is y=

swat32

The asymptote of the function $f(x)=3^x$ is y = 0.

The asymptote of the function $f(x)=3^x+4$ is y = 0+4=4

Answer: y = 4

7 0

4 years ago

Rewrite each expression as a single power

Lapatulllka [165]

<h2> $6^{8}$ </h2><h2></h2><h2>6 TO THE POWER OF 8 BECAUSE WHEN YOU MULTIPLY, YOU ADD THE POWERS TOGETHER. 4+4=8</h2>

6 0

3 years ago

Solve tor r.<br> *a(5 – x) = bz - 8

Mars2501 [29]

Answer:

See explanation

Step-by-step explanation:

Assuming the given equation is

$a(5 - r) = bz - 8$

To solve for r, we first divide both sides by a.

$5 - r = \frac{ bz - 8}{a}$

We now subtract 5 from both sides:

$- r = \frac{ bz - 8}{a} - 5$

We now divide through by - 1 to get:

$r = 5 - \frac{ bz - 8}{a}$

Or

$r = \frac{5a - bz + 8}{a} \: \: where \: a \ne0$

3 0

3 years ago

A scatterplot is produced to compare the size of a school building to the number of students at that school who play an instrume

nata0808 [166]

There is not relationship between the size of a school building and the number of students who play an instrument because the scatterplot does not have a cluster.

Answer: Option A.

<u>Explanation:</u>

A scatterplot is a type of data display that shows the relationship between two variables. It makes use of the Cartesian coordinates to plot the values of the two variables for a set of data. This is used to show how much is one variable is affected by the other variable.

Since in the scatterplot which is being talked about in this question, it is scattered and is not clustered, this shows that there is no relationship between the size of the school and the number of the students who play instruments in the school.

6 0

3 years ago

Read 2 more answers

Vladimir says that the equation of the line that passes through points (-5,-3) and (10,9) is y=4/5x+1 Robyn says that the line p

Talja [164]

Answer:

Robyn and Vladimir both are correct.

Step-by-step explanation:

Vladimir says that the equation of the line the passes through points (-5, -3) and (10,9) is y = $\frac{4}{5}$ x + 1

Let's find the equation of line

Slope of the line passing through ( -5, -3 ) and (10, 9 )

$m=\frac{y-y'}{x-x'}=\frac{9+3}{10+5}=\frac{12}{15}=\frac{4}{5}$

So equation will be y = $\frac{4}{5}$ x + c

Since the line passes through (-5, -3)

so (-3) = $\frac{4}{5}$ x (-5) + c

(-3) = -4 + c

c = -3 +4 = 1

So equation should be y = $\frac{4}{5}$ x +1

Therefore, Vladimir is correct.

Robyn says this line is passing through (-10,-7) and (-15, -11)

Slope $m=\frac{y-y'}{x-x'}=\frac{-11+7}{15+10}=\frac{-4}{-5}=\frac{4}{5}$

equation is y = $\frac{4}{5}$ x + c

Since this line passes through (-10 -7)

so (-7) = $\frac{4}{5}$ x (-10) + c

-7 = -8 + c ⇒ c = 8 - 7 = 1

Equation of the line will be y = $\frac{4}{5}$ x + 1

So Robyn and Vladimir both are correct.

5 0

3 years ago

Read 2 more answers