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Katarina [22]
3 years ago
8

How many solutions does the system have? Y=-2x-4 y = 3x+ 3

Mathematics
2 answers:
Nutka1998 [239]3 years ago
8 0

Answer:

2 solutions

Y= -6/5, -7/5

Step-by-step explanation:

substitute Y int he first equation with 3x+3 and work it out

3x+3 = -2x-4

x=-7/5

and then use the answer you just got and substitute again and work out till u get answer

y= 3(-7/5) +3

x=-6/5

Alika [10]3 years ago
7 0

Answer:

two solutions

1.x=-7/5;y1=6/5

2.x=-7/5;y2=-6/5

Step-by-step explanation:

y=-2x-4

y=3x+3

-2x-4=3x+3

-5x=7

x=-7/5

y1=14/5-4=(14-20)/5=6/5

y2=-21/5+3=(-21+15)/5=-6/5

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expeople1 [14]

Answer:

8.5m^{2}+ m -5

Step-by-step explanation:

Since perimeter, P=19m^{2}+ 2m -10 and we know that P=2(l+w) then P=2(l+m^{2})=2l+2m^{2}

The length will be 2l=19m^{2}+ 2m -10-2m^{2}=17m^{2}+ 2m -10

Now l=8.5m^{2}+ m -5

6 0
3 years ago
(5×24) ÷ (14×16) what's the answer
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Times the ones in () which becomes 120 * 224 = 0.535
6 0
3 years ago
Read 2 more answers
How do you find the least common for 3 and 8?
sesenic [268]

The least common multiple of 3 and 8 is 24.

The least common multiple of two numbers is the lowest value number that is a multiple of both the numbers. To find the least common multiple of 3 and 8, you first list their multiples:

Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24...

Multiples of 8: 8, 16, 24, 32, 40, 48, 56...

When you compare the two lists of multiples, you can see that the number 24 is the lowest number that is a multiple of both 3 and 8, so it is their LCM, or least common multiple.


<em>HOPE THAT HELPS!!!!</em>

8 0
4 years ago
Ms. Hernandez is taking her children and their friends to the movies. She will pay $10 for adult ticket and $7 for each child ti
arlik [135]

Answer: 10 + 7x \leq \\ 40

We can use exclusion method:

A and C  is not correct because Ms Hernandez doesn't want to spend more than 40 dollars --> so it must be less than or equal to 40

3 0
3 years ago
I need to a paint a spherical storage tank in the pool. it has a radius of 8 feet and the paint cans i brought will cover 75 squ
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<h3>Answer:   11 cans</h3>

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

Explanation:

SA = surface area of the sphere

SA = 4*pi*r^2

SA = 4*pi*8^2

SA = 804.247719

The surface area is roughly 804.247719 sq ft.

I used the calculator's stored version of pi to get the most accuracy possible.

Since 1 paint can covers 75 sq ft, divide that surface area over 75 to find out how many cans you need.

804.247719/75 = 10.72330292

Round up to the nearest integer to get 11

You'll have leftover paint, but it's better to go over the goal than come up short.

8 0
3 years ago
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