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3 years ago

Please help with this

Mathematics

1 answer:

Degger [83]3 years ago

3 0

All of them are wrong its 91 but if you want click or circle 90

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-6x-11x=68 HEEEEEEEEEEELP

zheka24 [161]

Answer:

The correct answer would be 4. Explanation below

Step-by-step explanation:

-6x-11x = 68

-6x-11x = -17x

-17x = 68

68/-17 = 4

Hope this helps!

~Starr

7 0

3 years ago

Read 2 more answers

The number of streetlights in a town is growing linearly. Four months ago (n = 0) there were 130 lights. Now (n = 4) there are 1

stich3 [128]

13.5 months

146-130=16

16/4=4

200-146=54

54/4=13.5

4 0

3 years ago

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Television networks frequently run public opinion polls on issues of concern. One network conducted a scientific poll asking a q

kobusy [5.1K]

Answer:

Option d

Step-by-step explanation:

Given that television networks frequently run public opinion polls on issues of concern. One network conducted a scientific poll asking a question concerning the approval rating of the way President Obama was handling the Iraq War. At about the same time a second network ran an online poll using a very similar question.

Observed data is

Poll Scien Online total

approve 339 385 724

disapprove 780 573 1363

1119 958 2087

$H_0: Both scientific and online are consistent\\H_a: not consistent$

(Two tailed chi square test)

Let us find out expected and chi square

Expected = row total x column total/grand total

The cell count expected in the online poll for those who approve

= $\frac{724*968}{2087} \\=333.94$

chi square = 7.81

Hence option d is right.

4 0

3 years ago

The sum of the ages of Kristen and Ben is 32. Four years ago Kristen was twice as old as Ben. How old are they both now?

Elan Coil [88]

Let us say that:

K = age of Kristen

B = age of Ben

From the problem, we make the equations:

eqtn 1: K + B = 32

eqtn 2: (K – 4) = 2 (B – 4)

Simplifying eqtn 2:

K – 4 = 2 B – 8

K = 2 B – 4

Plugging in this to eqtn 2:

(2 B – 4) + B = 32

3 B – 4 = 32

3 B = 36

B = 12

From eqtn 2:

K = 2 B – 4 = 2 (12) – 4 = 20

So Kristen is 20 while Ben is 12.

5 0

4 years ago

I need some help please

Galina-37 [17]

Answer:

Hexagon
Heptagon

Step-by-step explanation:

The first shape has 6 sides. Hence, it is called a hexagon.

The second shape has 7 sides. Hence, it is called a heptagon.

8 0

2 years ago

Read 2 more answers