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k0ka [10]
3 years ago
15

-4a+7a= ? i need ur help please

Mathematics
1 answer:
Ilya [14]3 years ago
6 0

Answer:

-4a + 7a = + 3a

But you don't actually need a pkus sign 3a is fine too. You are basically sum - 4 and 7. Let me know if you still confused.

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Someone help.I'm new<br>i suck at math​.Pleaseweee 50 points?
MrMuchimi

Answer:

45°

Step-by-step explanation:

Let's understand "supplement" and "complement" -- basics of geometry of angles.

  • When we say two angles, a & b, are supplementary, we mean that both ADD up to 180.
  • When we say two angles, a & b, are complementary, we mean that both ADD up to 90.

<em><u>If we have given an angle, such as "x", to find its supplement, we subtract the angle from 180. Similarly, we would need to subtract the angle x from 90 if we were to find the complement of the angle.</u></em>

<em><u /></em>

We want to find complement of 45, so we subtract 45 from 90 to get:

90 - 45 = 45°

Hence, the complement of a 45° angle = 45°

3 0
3 years ago
What is the perimeter P of △DEF to the nearest whole number?
inna [77]

Answer:

Can you please tell me what is the area of the given triangle?

3 0
3 years ago
You are renting a beach house for the summer. The cost of renting the beach house plus the one-time security deposit is represen
sveta [45]

Answer:

The security cost is 575

Step-by-step explanation:

Given

y = 151x + 575

x = days

y = cost

Required

Determine the security deposit

From the equation, we understand that

x represent days:

This implies that

151x represent the payment for x days.

<em>So, the security cost is 575</em>

7 0
3 years ago
3.69 / 3=<br> please show your work if you can
kogti [31]
3.69/3=
1.23


Hope this helps! :)
6 0
3 years ago
2X + 2 wht is the value of X
aksik [14]
Ultimately, it is impossible to solve an equation without two sides. If it was 2X=2, the answer would be X=1. But if it was 2X+2=0, the answer would be X=-1. The information given is impossible to work with,
3 0
4 years ago
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