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photoshop1234 [79]
3 years ago
11

True or false..How do I know if it's no solution

Mathematics
1 answer:
Misha Larkins [42]3 years ago
4 0

Answer:

False

Step-by-step explanation:

If (8,9) is a solution, you will be able to substitute 8 for x, and 9 for y.

(-2 x 8) + (4 x 9) = -20?

-2 x 8 = -16

4 x 9 = 36

-16 + 36 = 20

So, (8,9) is not a solution to the system.



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Which point is on the line 4y-2x=0?
hoa [83]
To figure this out, we just need to plug in the points.

4(-1) - 2(-2) = 0
-4 - (-4) = 0
-4 + 4 = 0
0 = 0 
True

The correct answer is a. (-2, -1).
5 0
3 years ago
A semicircular archway is built in front of a garden using 8 congruent granite tiles, as shown in the diagram. Find the area of
crimeas [40]
So there's 8 tiles.
Radius from archway to the outer edge would be : 7 +1 = 8ft

You can use this formula to count the area of semi circle : π r^2/2

A = 3.14 x 8ft^2 = 100.48 ft ^2
A = 3.14 x 7ft^2=  76.92  ft^2

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Then you have to divide it with the total tiles 
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hope this helps
5 0
3 years ago
Jess wants to measure how much water she uses in the shower each morning. She finds
forsale [732]

Answer:

32 gallons of water

Step-by-step explanation:

8 minutes = 480 seconds.

set up a proportion:

1/15=x/480

we have to solve for x:

15x=480

x=32.

Jess uses 32 gallons of water.

6 0
3 years ago
Read 2 more answers
Sanjay begins to correctly graph the function f(x) = (x + 1)2 – 3. Based on the axis of symmetry and the vertex, which graph cou
Vilka [71]
Given the function f(x) = (x + 1)^2 - 3, we recognize that because of the x^2 factor we have a parabola that opens up.  Its vertex is (-1, -3), which I have swiped from the given equation.  The axis of symm is x= -1.
3 0
3 years ago
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PLEASE HELP: A standard six-sided die is rolled.
amm1812

Answer in fraction form is 1/3

Answer in decimal form is 0.3333

Pick one answer only.

==========================================================

Explanation:

The sample space is the set of all possible outcomes. In this case, the outcomes consist of values between 1 and 6

S = sample space

S = {1,2,3,4,5,6}

There are 6 items here. Let B = 6.

We want to roll a number greater than 4, so the event space we're after is

E = {5,6}

which consists of 2 items. Let A = 2.

The probability we want is A/B = 2/6 = 1/3 = 0.3333

So if you go with the fraction option, then you'll type in 1/3

If you go with the decimal option, then you'll type in 0.3333

4 0
3 years ago
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