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zvonat [6]
3 years ago
10

Please help I need to turn this in tonight

Mathematics
2 answers:
Elanso [62]3 years ago
7 0

Answer:

Step-by-step explanation:

You speaking english

noname [10]3 years ago
7 0

Answer:

  • f(x) = - (x + 3)² + 12

Step-by-step explanation:

<u>The vertex form:</u>

  • f(x) = a(x - h)² + k, where (h, k) is the vertex of the parabola and a-  the leading coefficient

<u>We have on the graph:</u>

  • (h, k) = (-3, 12)

<u>Substitute into equation:</u>

  • f(x) = a(x - (-3))² + 12 = a(x + 3)² + 12

<u>Use the point (0, 3) to find the value of a:</u>

  • 3 = a(0 + 3)² + 12
  • 3 = 9a + 12
  • 9a = 3 - 12
  • 9a = - 9
  • a = -1

<u>So the function is:</u>

  • f(x) = - (x + 3)² + 12
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Jada, Lin, and Elena are saving money for a trip. Together they saved $120. Jada saved $20 less than Lin. Lin saved 3 times as m
defon

Step-by-step explanation:

This is a word problem that we must translate to mathematical expression before we can solve.

let the individual saving be the first letters of the names

Jada= J

Lin= L

Elena= E

1. Jada saved $20 less than Lin

    J=L-20

2. Lin saved 3 times as much money as Elena

   L= 3E

3. Hence Elena saved

   E

Together they saved $120.

hence

(L-20)+3E+E= 120

L-20+3E+E= 120

collecting like terms we hav

L+4E=120+20

L+4E= 140

but we know that L= 3E

3E+4E= 140

7E= 140

divide both sides by 7 we have

E= 140/7

E= $20

This means Elena saves $70

also  L= 3E

L= 3*20

L= $60

this means that Lean saved $60

also  J=L-20

J= 60-20

J= $40

This means that Jada saved $40

6 0
3 years ago
Help me pls 63 dived 3,448
DiKsa [7]

Answer:

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Step-by-step explanation:

7 0
3 years ago
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Eli is following this recipe to bake bread rolls. He uses 700 g of flour. How much of the other ingredients does he use? Recipe:
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Answer:

Step-by-step explanation:

ok so i think you need 15g sait/7g yeast/29ml oil/428ml water

5 0
4 years ago
The first two steps in the derivation of the quadratic formula by completing the square are shown below.
marissa [1.9K]

Answer: C

Step-by-step explanation:

8 0
3 years ago
I put D since I believe HL applies here but am not sure. Could anybody please help?
Fed [463]
<h3>Answer:  B) II and III</h3>

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

Explanation:

Check out the diagram below.

On the left side shows ASA can be used to prove the triangles congruent. Note the color coding to see how the angles match up. Also note that the segment TR is between angles STR and SRT. The order is important because ASA is different from AAS.

Angle STR = Angle VTU because they are vertical angles

Angle SRT = Angle VUT since they are alternate interior angles. Note how SR is parallel to UV. If the lines weren't parallel, then the alternate interior angles would not be congruent.

We can use AAS because if we know two angles of a triangle, we can find the third angle. Despite the fact that something like RST looks like a right angle, we don't have enough info to say it is or not. The square angle marker is missing. So it could be 90 degrees, or it might be something like 89 degrees instead. We don't have enough info. So we cannot use HL.

AAA or AA is not a congruence theorem. It's a similarity theorem. So we cross this off the list.

8 0
3 years ago
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