Plug in -1 for x the solve the equation. 3 * -1 -4(-1) which equals 7
Answer:

Step-by-step explanation:
If there are 3 milliliters of compound A used for every 4 milliliters of compound B, then we can denote that we use 3x milliliters of compound A and 4x milliliters of compound B to get 533 milliliters of the drug. Thus,

Hence, a chemist must take

of compound B.
I think you got confused with the 50 and 90.
Read my NOTE there it will surely help you answering other questions like this
Answer:
∠x = 63°
Step-by-step explanation:
The exterior angle added with the measure of ∠BAC will equal 180, since they will form a straight line, so we can calculate the measure of ∠BAC:
128 + x = 180
x = 52
∠BAC = 52°
The angles in a triangle all add up to 180°, so we can set up another equation to find x:
52 + 65 + x = 180
117 + x = 180
∠x = 63°
Answer:
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Step-by-step explanation:if i knew this i would try to help564545646ytgtrhgfbgrtrhgbfsdertrhgbfser5yhtgrw54y6536ythrgr54tgferthegryjthrgghtrgfhgrtftg