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tatyana61 [14]
3 years ago
9

STUCK ON THESE!!! PLEASE HELP!

Mathematics
2 answers:
natita [175]3 years ago
7 0

Answer:

_20___ × (-1/2) × __2__ = -20

8 x (-1/2) x 5= -20

Step-by-step explanation:

Hope I helped

DIA [1.3K]3 years ago
3 0
-80 , 1/2 is the answer
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If 2(x + 2) + 4(x - 1) = 8, then 3x =
lubasha [3.4K]

Answer:

3x=4

Step-by-step explanation:

3 0
3 years ago
Solve for x: 15x2 = x+2 <br><br> x2 is x to the second power
galben [10]
Greeting!

15x² = x + 2
15x² - x -2= 0
Factor left side
(5x-2)(3x+1)=0
Set factors equal to 0
5x - 2 = 0 or 3x + 1 -0
x = 2/5 or x= -1/3

I hope that helps!

Brainlest answer :)
4 0
3 years ago
the ratio income to expenditure is 6:5 find the savings if the expenditure is 20,000 dollars. asking for savings not income​
Levart [38]

Answer:

$4000

Step-by-step explanation:

Expenditure= 6*20000/5

=24000

Saving= 24000-20000

=$4000

8 0
3 years ago
Macy's is having a Fall sale where everything is 30% off. Angela has a coupon for an additional 10%
givi [52]

Answer:

$113.40

Step-by-step explanation:

The dress is $180 subtracted by 30% ($54) and is now $126

$126 - 10% which is $12.60 and is now $113.40

5 0
3 years ago
A dairy farmer wants to mix a 85% protein supplement and a standard 55% protein ration to make 1200 pounds of a high-grade 80% p
mr_godi [17]

The diary farmer should use 1000 pounds of 85 % protien and 55 % of 200 pounds to make 1200 pounds of a high-grade 80% protein ration

<em><u>Solution:</u></em>

Let the amount of 85 % protien supplement be "x"

Then amount of 55 % protien be (1200 - x)

According to given question,

85 % of "x" protien supplement + 55 % of 1200 - x protien used to get 80 % of 1200 pounds

85 % of x + 55 % of (1200 - x) = 80 % of 1200

\frac{85}{100} \times x + \frac{55}{100} \times (1200 - x) = \frac{80}{100} \times 1200\\\\0.85x + 0.55(1200 - x) = 960\\\\0.85x + 660 - 0.55x = 960\\\\0.3x = 960 - 660\\\\0.3x = 300\\\\x = 1000

Pounds of 85 % protien used = 1000 pounds

Then pounds of 55 % protien used = 1200 - 1000 = 200 pounds

Thus he should use 1000 pounds of 85 % protien and 200 pounds of 55 % protien to get 1200 pounds of a high-grade 80% protein ration

7 0
3 years ago
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