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shutvik [7]
3 years ago
8

-19 ≥ z/7+23 there are no answer choices but I have to write this to make it 20 characters.

Mathematics
1 answer:
butalik [34]3 years ago
3 0

Answer:

-294 ≥ z

Step-by-step explanation:

-19 ≥ z/7+23

Subtract 23 from each side

-19-23 ≥ z/7+23-23

-42 ≥ z/7

Multiply each side by 7

-42*7 ≥ z/7 *7

-294 ≥ z

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What are the factors in 6x(x+3)?
VladimirAG [237]

Answer:

The factors are 0 and -3

Step-by-step explanation:

In order to find the factors of this equation, you would have to set each term 6x and (x + 3), equal to 0 separately.

6x = 0

x = 0

x + 3 = 0

x = -3

7 0
3 years ago
10x + 7y = –8<br> 7x + 7y = –14
Georgia [21]

Answer:

(2, - 4 )

Step-by-step explanation:

Given the 2 equations

10x + 7y = - 8 → (1)

7x + 7y = - 14 → (2)

Subtract (2) from (1) term by term to eliminate y

(10x - 7x) + (7y - 7y) = - 8 - (- 14) , that is

3x = 6 ( divide both sides by 3 )

x = 2

Substitute x = 2 into either of the 2 equations and solve for y

Substituting into (1)

10(2) + 7y = - 8

20 + 7y = - 8 ( subtract 20 from both sides )

7y = - 28 ( divide both sides by 7 )

y = - 4

solution to the system of equations is (2, - 4 )

4 0
3 years ago
Simplify the expression 120x^3/18xy
larisa86 [58]
120 / 18 = 20/3
x^3 / xy = x^2 / y

20x^2 / 3y
5 0
1 year ago
Identify the type of observational study​ (cross-sectional, retrospective, or​ prospective) described below. A research company
shepuryov [24]

Answer:

Cross Sectional

Step-by-step explanation:

A cross sectional is one in which an association is developed between a risk factor or an outcome.

In the given question the device is used to record the viewing habits of about 2500 ​households, and the data collected today will be used to determine  the proportion of households tuned to a particular news program. There will be risk factor in today's research with the future developed program which will the outcome.

For example there are 20 students in my class who cannot write. So I develop a program to help them write. But the next year there may not be any student who would require such help.So there's a risk factor associated with the outcome.

Cross sectional results are recorded in a two ways table showing do's and don'ts.

7 0
3 years ago
Can someone help me with this pls
Oksi-84 [34.3K]

Answer:

x = 1/3 or x = -2/3

Step-by-step explanation:

Let's solve your equation step-by-step.

9x2+3x−2=0

For this equation: a=9, b=3, c=-2

9x2+3x+−2=0

Step 1: Use quadratic formula with a=9, b=3, c=-2.

x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}

x=\frac{-(3)\pm\sqrt{(3)^2-4(9)(-2)} }{2(9)}

x=\frac{-3\pm\sqrt{81} }{18}

x = 1/3 or x = -2/3

4 0
2 years ago
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