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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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Find the y intercept
Mashcka [7]

Answer:

The y-int is 4

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
5 3/8 - 2 1/8 = (make sure you simplify the fraction)
Vsevolod [243]

Answer:

13/4 or 3 1/4

Step-by-step explanation:

5 3/8 = 43/8

2 1/8 = 17/8

43/8 - 17/8 = 26/8

26/8 = 13/4

4 0
3 years ago
A restaurant sees about 600 orders on Tuesday. This is down from last Tuesday by about 0.85%. How many did they see last Tuesday
zaharov [31]

Answer:

Number of orders seen on last Tuesday = 605

Step-by-step explanation:

Number of orders seen on Tuesday = 600

It is given that it is 0.85% less than last Tuesday.

Let number of sales on last Tuesday = x

As per question statement:

Number of order on last Tuesday - 0.85% of Number of order on last Tuesday = 600

OR

i.e. if we subtract 0.85% of x from x, it must be equal to 600.

x-\dfrac{0.85}{100}x =600\\\Rightarrow x-\dfrac{0.85}{100}x =600\\\Rightarrow \dfrac{100-0.85}{100}x =600\\\Rightarrow \dfrac{99.15}{100} \times x =600\\\Rightarrow x =\dfrac{600\times 100}{99.15}\\\Rightarrow x =\dfrac{60000}{99.15}\\\Rightarrow x \approx 605

So, there were about 605 order seen last Tuesday.

8 0
3 years ago
B is the midpoint of ac. if ab=8x-7 bc=6x+7 find ac
quester [9]

Answer: AC = 98

Step-by-step explanation:

A midpoint is a point on a line segment that divides it into <em>two equal parts</em>.

This means AB = BC

AB = 8x - 7

BC = 6x + 7

AB = BC

8x - 7 = 6x + 7

Solve this to find x

Add 7 to both sides

8x = 6x + 14

Subtract 6x from both sides

2x = 14

Divide both sides by 2

x = 7

Now AC = AB + BC

AC = AB + BC

AC = 8x - 7 + 6x + 7

AC = 14x

Substitute 7 for x

AC = 14(7)

AC = 98

Hope this helps!

6 0
3 years ago
What is the value of x? <br><br> __mm
andrezito [222]

Answer:

161.91

Step-by-step explanation:

First find the side length or YT by using the pythagorean theorem.

c= 129.2^2 = 16692.64

b= 68^2=4624

c-b = 12068.64

The square root of 12068.64 is approximately 109.86.

Using that length use the pythagorean theorem again and so:

a = 109.86^2 = 12068.64

c = 57^2 = 3249

a-c = 8819.64

The square root of 8819.64 is approximately 93.91.

So, 68 + 93.91 = 161.91

6 0
3 years ago
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