1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Digiron [165]
4 years ago
8

How to solve this to get to the answers

Mathematics
1 answer:
Leya [2.2K]4 years ago
4 0
I believe its A for your number 5
You might be interested in
A​ doctor's prescription calls for a daily intake containing 50 mg of vitamin C and 10 mg of vitamin D. Your pharmacy stocks two
blagie [28]
Setup
0.8x + 0.4y = 50
0.1x + 0.2y = 10 - Multiply by -2 and add

get
0.6x = 30
x = 50 mg compound A

.1 (50) + .2y = 10
5 + .2y = 10
.2y = 5
y = 25 mg compound B
8 0
4 years ago
A 3 inch cube is painted on all sides with RED. The cube is then cut into small cubes of dimension 1 inch. All the cubes are col
frosja888 [35]
Once again the answer is 0. The reason is because the cube is 3 by 3 there is a cube 1 by 1 in the center of the big cube, because it is surrounded by other 1 by 1 cubes that cube doesn't get any sides painted. Therefor there is no possibility for all cubes to have at least one side painted.
3 0
4 years ago
If the quadratic formula is used to solve 2x^2 - 3x - 1 = 0, what are the solutions?
kykrilka [37]

Answer:

x=-1

Step-by-step explanation:

2x-3x-1=0\\(2x-3x)+(-1)=0\\-x-1=0\\-x-1+1=0+1\\-x=1\\\frac{-x}{1}=\frac{1}{-1}\\  x=-1

8 0
4 years ago
You buy rice at $0.71 a pound.
luda_lava [24]

Answer:

$7.10

Step-by-step explanation:

0.71 x 10= 7.10

6 0
3 years ago
Two angles are complementary. The larger angle is 46∘46∘ larger than the smaller angle. Find the measure of both angles, and sep
Oxana [17]

Answer:

22, 68

Step-by-step explanation:

(Complementary means that the angles together equal 90 degrees)

x + x + 46 = 90

2x + 46 = 90

2x = 44

x = 22

22 + 46 = 68

5 0
2 years ago
Other questions:
  • The ratio of Melanie's allowance to Jacob's allowance is 4.1 to 20.5. If Jacob gets $5.00, how much allowance does Melanie get?
    11·2 answers
  • The time it takes to train a newly hired telephone sales representative is normally distributed with a mean of 136 hours and a s
    11·1 answer
  • Order the values least to greatest 8,|3|,-5,|-2|,-2 plz help
    15·2 answers
  • Please help me guys with these two problems. I don't know how to show work for both of them.
    10·1 answer
  • The value of an error must be positive? true or false
    6·1 answer
  • when Kaitlin divided a fraction by one half the result was a mixed number was the original fraction less than or greater than 1/
    15·1 answer
  • the length of one board is 2 feet 10 inches,and the length if anither board is 1 yard 1 foot 9 inches. what is the total length
    9·2 answers
  • Write an equation for each figure side
    11·1 answer
  • LO bisects &NLM, LM= 22, NO = 6, and LN= 14. What is the approximate value of x?
    10·1 answer
  • What is the formula for margin of error?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!