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alexandr1967 [171]
3 years ago
5

What is the value of x?

Mathematics
1 answer:
disa [49]3 years ago
4 0

Answer:B

Step-by-step explanation:

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Green paint is made by mixing blue, yellow and white paints in the ratio 2 : 7 : 1. How much blue paint is needed to make 64 lit
Lyrx [107]

Answer:

12.5 litres of Blue paint

Step-by-step explanation:

2+7+1=10

therefore;

10=64

2=??

cross-multiply

(2×64)÷10

answer= 12.4 liters or 12.5

6 0
3 years ago
I need help with this math problem
boyakko [2]
Consider the right triangle HBF. The Pythagorean theorem tells you ...
   HF² = HB² + BF²

The lengths HB and BF can be determined by counting grid squares, or by subtracting coordinates. Here, it is fairly convenient to count grid squares. When we do that, we find ...
   HB = 2
   BF = 5
Using these values in the equation above, we get
   HF² = 2² + 5²
   HF² = 4 + 25 = 29
Taking the square root gives the length HF.
   HF = √29

5 0
4 years ago
Sally's pet grooming business charges $5 per cat and $10 per dog for a pet bath. She earned $550 for pet baths last month. If 20
Minchanka [31]

Answer:

45 dogs

Step-by-step explanation:

so she has $550 and she did 20 cats and it costs $5 per cat and 5 x 20 is $100 and $550 - $100 = 450 and 450 divided by 10 ( because it's $10 per dog) is 45.

8 0
3 years ago
Need help with this...pronto..please​
san4es73 [151]
1) 130
2) 70
3) 21.5%
4) 77
5) 10
5 0
3 years ago
Find the zeros of the function f(x)=2x^2-7x-30
ivanzaharov [21]
2x^2-7x-30=0 \\ \\
a=2 \\ b=-7 \\ c=-30 \\
b^2-4ac=(-7)^2-4 \times 2 \times (-30)=49+240=289 \\ \\
x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}=\frac{-(-7) \pm \sqrt{289}}{2 \times 2}=\frac{7 \pm 17}{4} \\
x=\frac{7-17}{4} \ \lor \ x=\frac{7+17}{4} \\
x=\frac{-10}{4} \ \lor \ x=\frac{24}{4} \\
x=-\frac{5}{2} \ \lor \ x=6 \\
\boxed{x=-2.5 \hbox{ or } x=6}
6 0
3 years ago
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