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3 years ago

IF x=5, and 3y = -2x+28 what would y equal?

Mathematics

2 answers:

jasenka [17]3 years ago

7 0

Answer:

Step-by-step explanation:

(5,6)

skad [1K]3 years ago

6 0

Answer:

y = 6

Step-by-step explanation:

Alright so to answer this question we first have to get y by itself and do get rid of the 3 we have to divide 3 from each side. so now we have the equation y=-2/3x + 28/3. Then we want to plug in 5 to x so we would have -2/3(5)+28/3. Finally we plug it into a calculator and you get that y = 6 when x is 5

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Find the area of the following figure..

Marina86 [1]

Answer:

456 $cm^{2}$

Step-by-step explanation:

Find the height of the trapezoid first (QR):

$\sqrt{37^{2} -35^{2} }$ = 12

QR = 12

Area:

$\frac{a+b}{2}$ × h = $\frac{35+41}{2}$ × 12

= 456 $cm^{2}$

5 0

2 years ago

A small university is concerned with monitoring its electricity usage in its Student Center. Specifically, its officials want to

valkas [14]

Answer:

Since p-value > ∝, H0 is accepted

Step-by-step explanation:

Calculating gives the following results.

ANOVA Table

Source DF Sum Mean F Statistic P-value

of Square Square

Groups 6 191.61 31.935 0.020 0.999

(b/w groups)

Error

(within 14 21736.08 1552.577

groups)

Total 20 21927.69 1096.385

1. H0 hypothesis

Since p-value > ∝, H0 is accepted.

Hence the averages of all groups considered to be equal.

Or the difference between the averages of all groups is not big enough to reject H0.

2. P-value

P-value equals 0.999. This means that if we would reject H0, the chance of type1 error (rejecting a correct H0) would be too high i.e (99.99%)

The bigger p-value supports H0.

3. The statistics

The test statistic F equals 0.020, which lies in the accepted range: [-∞ : 2.8477]

6 0

3 years ago

What is the value of y in the solution to the following system of linear equations?

Leviafan [203]

ANSWER

$y=12$

EXPLANATION

One way is to make x the subject in one equation and substitute into the other.

$2x+2=y$

$\Rightarrow 2x=y-2$

$\Rightarrow x=\frac{y}{2}-1--(1)$

The second equation is

$2y=5x-1--(2)$

Let us put equation 1 in 2

$\Rightarrow 2y=5(\frac{y}{2}-1)-1$

$\Rightarrow 2y=\frac{5y}{2}-5-1$

$\Rightarrow 2y=\frac{5y}{2}-6$

Multiplying through by 2 gives;

$\Rightarrow 4y=5y-12$

$\Rightarrow 4y-5y=-12$

$\Rightarrow -y=-12$

$\Rightarrow y=12$

6 0

3 years ago

Read 2 more answers

Is there an easier way to do geometric sequences?

arsen [322]

Answer:

A geometric sequence is an ordered list of numbers in which each term after the ... By utilizing the common ratio and the first term of a geometric sequence, we can sum ... His method was to dissect the area into an infinite number of triangles.

Step-by-step explanation:

easy

4 0

3 years ago

68/80 as a fraction,percent,and decimal

Sholpan [36]

Fraction: 17/20
Divide by 4 to get 17/20
(68/4)/(80/20)

Percent: 85%
Using 17/20 -Multiply each side by 5 to get ____/100
17*5/20*5 = 85/100 or 85%

Decimal: 0.85
Using 85/100, divide it out to get 0.85.

5 0

4 years ago