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ivanzaharov [21]
3 years ago
14

Please help!!! The first​ answerer will get brainiest! Thanks!

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
6 0
Answer is b ,-4x^2 - 13y^2
You might be interested in
How much less is -200m than 450m?
saveliy_v [14]

Answer:

-200 metre is less 450m because - 200 metre is negative.

4 0
3 years ago
A group of 86 people consist of men women and children. There are twice as many women then there are men. There are 6 more child
weqwewe [10]

Answer: 16 men

32 women

38 children

Step-by-step explanation:

Let x represent the number of men in the group.

Let y represent the number if women in the group.

Let z represent the number of children in the group.

A group of 86 people consist of men women and children. This means that

x + y + z = 86 - - - - - - - - - - - - 1

There are twice as many women than there are men. It means that

x = y/2

There are 6 more children than there are women. This means that

z = y + 6

Substituting x = y/2 and z = y + 6 into equation 1, it becomes

y/2 + y + y + 6 = 86

multiplying through by 2, it becomes

y + 2y + 2y + 12 = 172

5y = 172 - 12 = 160

y = 160/5 = 32

x = y/2 = 32/2

x = 16

z = y + 6 = 32 + 6

z = 38

8 0
3 years ago
A couple does not wish to spend more than $60 for dinner at a restaurant. if a sales tax of 7% is added to the bill and they pla
Firlakuza [10]
Hey there!

The first step of this problem would be to add together our two percentages, then convert that percentage into a decimal by dividing by 100. 

15% + 7% = 22%

22 ÷ 100 = 0.22

It can be assumed here that 22% of the cost will be added tax and tip. We can use 0.22 to represent that percentage in our problem. Just multiply that decimal by the maximum amount of money they want to spend, $60, to get the amount that will just be tax and tip. Finally, subtract the tax and tip from $60 to find the most they can spend on the meal itself. 

60 × 0.22 = 13.20

60 – 13.20 = 46.80

The total amount they can spend is 46.80. 

Hope this helped you out! :-)
5 0
3 years ago
All you need is in the photo <br><br>please answer step by step ​
sasho [114]
Carol, download a app called connects way better
7 0
3 years ago
What is the equation of this line?
ivann1987 [24]
We know the slope is 2 (because it increases 2 units every one unit) and the y-intercept is 0
y = mx + b
where m is the slope and b is the y intercept

y = 2x

Have an awesome day! :)
6 0
3 years ago
Read 2 more answers
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