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3 years ago

Can y’all Help me with 7 10 11 12

Mathematics

1 answer:

Art [367]3 years ago

6 0

#7. C #10. C #11. A #12. C

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Find the sum of the zeros in the following equation: (2x-1)(x+8)(2x-4)(x-1)

lara [203]

Answer:

$-9\frac{1}{2}$

Step-by-step explanation:

$2x+1=0$

$2x=-1$

$x=-\frac{1}{2}$

$x+8=0$

$x=-8$

$2x-4=0$

$2x=4$

$x=2$

$x-1=0$

$x=1$

$1+2-8-\frac{1}{2}$

$=-1-8\frac{1}{2}$

$=-9\frac{1}{2}$

Sum of fractions $=-9\frac{1}{2}$

5 0

3 years ago

Is (4,3) a solution to 2x-y <4?

olga55 [171]

Sub the point into the inequality
2(4)-3<4
8-3<4
5<4
Therefore, no, it is not a solution because 5 is not less than 4
Hope this helps!

3 0

3 years ago

Read 2 more answers

One year, the population of a city was 80,000. Several years later it was 66,400. Find

Shalnov [3]

Answer:

The population decrease by 17%.

Step-by-step explanation:

This is because 66,400 is 83% of 80,000.

100%-83%= 17%

Therefore, the percentage of the population that decreased was 17%

7 0

3 years ago

An electrician charges a set fee of $50 for every house call and then charges an additional hourly rate. One day, the electricia

Serhud [2]

Answer:

$50+5t=C$

Step-by-step explanation:

Suppose the electrician spends t hours at the house working.

Amount charged for every house call by electrician = $50

The electrician earned a total of $400 for a 5 hour job.

Also, C denotes total cost of the electrician's services.

So, the equation for C in terms of t is given below.

$50+5t=C$

Here, $C=400$

7 0

3 years ago

G is the centroid of triangle ABC.

AleksAgata [21]

Answer:

x = 37
DG = 22
AG = 44
AD = 66

Step-by-step explanation:

We presume your "centroid ratio theorem" tells you that AG = 2·DG, so ...

(x+7) = 2(x -15)

x + 7 = 2x - 30 . . . . eliminate parentheses

37 = x . . . . . . . . . . .add 30-x

Then AG = 37+7 = 44

and DG = 37-15 = 22.

Of course, AD = AG +GD = 44 +22 = 66

7 0

3 years ago

Read 2 more answers