Answer:
Ming must add 0.375 L of a 10% sugar solution
Step-by-step explanation:
if 3 L = 80%
1.5 L should = 40% (since it is half of 80%)
and if 40 divided by 4 = 10%
1.5 also needs to be divided by 4
so 1.5 divided by 4 = 0.375
that means Ming must add 0.375 L of a 10% sugar solution
y = -2x + 9
y = 4x - 3
y is isolated in both equations, thus you may set the expressions (-2x + 9) and (4x - 3) equal to each other and solve for x.
-2x + 9 = 4x - 3
Subtract 9 from both sides.
-2x + 9 - 9 = 4x - 3 - 9
-2x = 4x - 12
Subtract 4x from both sides.
-2x - 4x = 4x - 12 - 4x
-6x = -12
Divide both sides by -6.
-6x/-6 = -12/-6
x = 2
Substitute 2 for x into one of the original equations to find y.
y = 4x - 3 (given)
y = 4(2) - 3 (substitute)
y = 8 - 3 (multiply)
y = 5 (subtract)
Plug x- and y-values into original equations to check work.
5 = -2(2) + 9
5 = - 4 + 9
5 = 5
5 = 4(2) - 3
5 = 8 - 3
5 = 5
Answer:
x = 2 and y = 5; (2, 5).
When you see anything raised to the 1/2, it is just the square root. Similarly, anything raised to the 1/3 is the cubed root, and so on.
All the question is asking for is the square root of 64.<span />
Answer:
the y intercept would be at (0,-6)
The sections of the garden is an illustration of fractions
The number sentence best shows whether Imelda is correct is 1/2 ÷ 3
<h3>How to determine the number sentence?</h3>
From the question, we understand that she plants in 1/2 of the garden
Then 1/2 of the garden is divided into 3 sections, one of which is used to plant tulips
So, the area in which tulips are planted is:
Tulip = 1/2 ÷ 3
Hence, the number sentence best shows whether Imelda is correct is 1/2 ÷ 3
Read more about number sentence at:
brainly.com/question/24744861