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schepotkina [342]
4 years ago
13

Joy and Cullen put some money into their money boxes every week. The amount of money (y), in dollars, in their money boxes after

a certain amount of time (x), in weeks, is shown by the equations below:
Joy: y = 30x + 20
Cullen: y = 20x + 90

After how many weeks will Joy and Cullen have the same amount of money in their money boxes, and what is that amount?



6 weeks, $150
230 weeks, $7
7 weeks, $150
7 weeks, $230
Mathematics
2 answers:
bogdanovich [222]4 years ago
5 0

Answer:

7 weeks, $230

Step-by-step explanation:

i just took the test

Harrizon [31]4 years ago
4 0
The answer would be D. 7 weeks, $230. 

Explanation: y would be the total amount after x weeks. So, to find the answer, simply go through your choices and insert x and y. Both y's for Joy and Cullen have to match up for the answer to be correct. 

For answer D, it looks like: 

Joy: 30(7) + 20 = 230
Cullen: 20(7) + 90 = 230

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Answer:

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Step-by-step explanation:

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3 years ago
Gotta need answers fast like asap, it’s geometry, just fill the blanks pls
pentagon [3]

<em>Two </em>or <u>more</u> triangles are said to be congruent if and only if they have <u>equal</u> lengths of <em>sides</em> and <u>equal</u> measures of <em>angles</em>.

Thus, the required <u>proof</u> is as shown below:

   <u>STATEMENTS </u>                                             <u>REASONS</u>

1. ΔABC and ΔDEC with AB ≅ DE;

  BC ≅ EC; <1 ≅ <2                                          Given

2. <1 and < ABC; < 2 and <DEC are sup     <u>Sum</u> of angles on a <em>straight </em>line

3. <ABC ≅ <DEC                                <em>Congruent</em> angles of <u>similar</u> triangles

4. ∴ΔABC ≅ ΔDEC                              <em>Side-Angle-Side</em> (SAS) postulate

5. ∴<ACB ≅ <DCE                                         CPCTC postulate

For more clarifications on the properties of congruent triangles, visit: brainly.com/question/1675117

#SPJ1

4 0
2 years ago
Using the side lengths determine whether the triangle is acute obtuse or right.
Deffense [45]
Either acute or right i’m sorry if it’s not that helpful i wish you the best tho stay safe
7 0
3 years ago
If MJ is in grade 8, then he is 14 years old.​
ValentinkaMS [17]

Answer:

True

Step-by-step explanation:

because the grade 8 students can be 14 years old

8 0
3 years ago
Which angles are pairs of alternate exterior angles? Check all that apply.
Gnom [1K]
Answers: 
1. Angle 5 and angle 11
5. Angle 4 and angle 6

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

Explanations:

Let's go through the list of possible choices and check each one.

For each of these, I'll refer to the attached image. 

-------------------------

1. Angle 5 and angle 11

Note how I labeled the lines A through D (as well as color-coded them). Imagine if line A and line B were made to be parallel lines. Line D is the transversal cut that helps generate angle 5 and angle 11. We'll be focusing on this tranversal. Ignore line C entirely for now.

We can see that angle 5 and angle 11 are on the outside of the "parallel" train tracks that A and B form. That makes them exterior angles. The two angles are on alternate sides of the transversal cut line D. All together, they are alternate exterior angles. 

This is one of the answers

-------------------------

2. Angle 7 and angle 12

Again focus on only line A, B, and D. Ignore line C. Angle 12 is exterior but angle 7 is an interior angle. It is between the two "parallel" train tracks line A and line B. 

Cross this off the list.

-------------------------

3. Angle 11 and angle 16

This time we'll imagine that line C and line D can be rearranged to be parallel. Line B is the transversal cut we want. Ignore line A entirely.

Angle 16 and angle 11 are exterior angles with regards to the lines mentioned above; however, they do not alternate on opposite sides of line B. These two angles are same side exterior angles. 

Cross this off the list.

-------------------------

4. Angle 2 and angle 14

These two angles are corresponding angles. Imagine line A and B are laid parallel with line C as the transversal cut. 

Angle 2 and angle 14 are on the same side of the transversal cut. The two angles are both above their adjacent line (A and B)

Cross this off the list.

-------------------------

5. Angle 4 and angle 6

Imagine that line C and line D can be rearranged to be parallel. Line A is the transversal cut we want. Ignore line B entirely.

Based on that set up, we can see that angle 4 and angle 6 are indeed alternate exterior angles.

This is one of the answers

-------------------------

6. Angle 8 and angle 10

These are alternate interior angles. It might help to erase line C. It might also help to arrange line A to be parallel to line B. 

Cross this off the list.

8 0
3 years ago
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