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Tcecarenko [31]
3 years ago
10

What is -12.5-8.3

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Mathematics
2 answers:
photoshop1234 [79]3 years ago
8 0

Answer:

Step-by-step explanation:

-(12.5+8.3) = - 20.8

Mama L [17]3 years ago
5 0

If it’s a negative equation is should be -20.8 otherwise it’s 4.2

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The ratio of the number of cups of blue paint to the number of cups of red paint that Lara mixed to make a shade of purple paint
katrin2010 [14]

Answer:

Part A: Number of cups of blue paint are 3 that are mixed with each cup of red paint.

Part B: \frac{1}{3}

Part C:<em> $8</em>

Step-by-step explanation:

Given that:

The ratio of the number of cups of blue paint to the number of cups of red paint that Lara mixed to make a shade of purple paint is 3:1.

Part A:

The number of cups of blue paint = 3

The number of cups of red paint = 1

In sentence form, it can be written that:

Number of cups of blue paint are 3 that are mixed with each cup of red paint.

Part B:

3 cups of blue paint requires 1 cup of red paint.

\frac{3}{3}=1 cup of blue paint requires \frac{1}{3} cup of red paint.

Here, unitary method is used.

So, \frac{1}{3} cup of red paint should be added to each cup of blue paint to make shade of purple.

Part C:

6 cups of blue paint are purchased for $48.

1 cup of blue paint is purchased for \frac{\$48}{6} = \$8

5 0
2 years ago
Maths watch help me please thank you
Dovator [93]

Answer:

71 %

Step-by-step explanation:

Paper 1 :

65% of 120 = 0.65 X 120 = 78

Paper 2 :

80% of 80 = 0.8 X 80 = 64

Total Percentage:

Add the two scores 78 + 64 = 142

Add the what it was out of 120 + 80 = 200

Use (Score / Total marks available) X 100

(142 / 200) X 100 = 71

3 0
2 years ago
What is the integer that makes the following subtraction sentence true:<br><br> 8 −? = –1
VashaNatasha [74]
8 - ? = -1. the missing number would be 9.
7 0
3 years ago
Solve 7x^2–20x = 3.<br><br><br><br> ;
sasho [114]

Answer:

x=3, -1/7

Step-by-step explanation:

7x^2-20x-3=0

Factor.

(x-3)(7x+1)=0

x-3=0 ⇒ x=3

7x+1=0 ⇒7x=-1 ⇒x= -1/7

3 0
3 years ago
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Please help me I need to get a good grade on this
Julli [10]
1 4/5 - 2/5 = r you minus the total she has already walked or ran from the total she plans on running to get “r”
8 0
3 years ago
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