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Marrrta [24]
2 years ago
5

I been asking for help since yesterday

Mathematics
1 answer:
mihalych1998 [28]2 years ago
6 0
This one is extremely simple, and we can use the color coded pie chart to find the cost of each of the 5 things.

For the first, decorations, Mary spent $?? as shown by the blue triangle on the pie chart. Let’s get the other ones first to total the money left over.

For the second, she spent $65 on food, as shown by the green triangle on the pie chart.

For the third, she spent $80 on party hall rental, as shown by the blue triangle on the pie chart.

For the fourth, she spent $30 on prizes, as shown by the dark blue triangle.

And for the fifth one, she spent $45 on invitations. A bit too expensive if you ask me.

Then we add all the costs together, and get 220. After adding the extra costs such as candy, costumes, and music, we get a total of $345. We would subtract this from $375 to get a total of $30 left over, which was spent on decorations. The ??? value of the light blue triangle is $30.

Hope this helps!
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Four-thirds times the sum of a number and 8 is 24. what is the number?
labwork [276]
So first you take the words and put them into an equation. "a number" that never gets directly told to you will always be a variable, which is easiest to make X. "The sum of a number and 8" will mean that 8+something is the sum so they have to go in parenthesis... giving you
 4/3*(x+8)=24
now just solve for X, remembering to use the reverse of PEMDAS, since you're solving for the variable.
remove what is furthest away to the X first.
x+8=24*3/4
x+8=18
x=18-8
x=10
Now, remember to always go through and replace your variable with its value and solve. if it is not equal on both sides, retry the problem because you may have missed a small +, -, or * somewhere!


Hope this helped:)
8 0
3 years ago
Anna wants to factor the polynomial p(x)=5x^4+40x. She knows that the sum of cubes formula is a^3+b^3=(a+b)(a^2−ab+b^2).
Artemon [7]

Answer:

Part A:  Option 2, A: Anna’s answer is incorrect. She correctly factored out 5x, but incorrectly identified a and b, so her answer cannot be correct.

Part B:  Option 3, B: 5x(x+2)(x^2−2x+4)

Step-by-step explanation:

p(x) = 5x^4 + 40x

p(x) = 5x(x^3 + 8)

p(x) = 5x(x + 2)(x^2 - 2x + 4)

Part A:  Option 2, A: Anna’s answer is incorrect. She correctly factored out 5x, but incorrectly identified a and b, so her answer cannot be correct.

Part B:  Option 3, B: 5x(x+2)(x^2−2x+4)

7 0
3 years ago
The experimental probability that Alexander wins tennis match is 0.21 or 21/100
Fynjy0 [20]

The experimental probability that

Alexander wins a tennis match is 0.21.

If he plays 40 tennis matches in the next week, about how many matches can

Alexander expect to lose?

Is it 32 matches? i got this from google  

8 0
3 years ago
Click to correct any capitalization errors.
Naddika [18.5K]

Answer:

Step-by-step explanation:

Quidnet Beach in Massachusetts offers fantastic views of Sankaty Head Light, a lighthouse that overlooks the Atlantic Ocean.

5 0
3 years ago
please help me. the boat traveled up the river at 15 miles an hour to reach their campsite 90 miles up the river, the Rogers tra
irga5000 [103]

Answer:

30 miles in the morning and 60 in the afternoon.

Step-by-step explanation:

15+15= 30 or 2 hours

15+15+15+15= 4 hours (60miles)

4 0
3 years ago
Read 2 more answers
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