I NEED AN ANSWER ASAP Find the value of x. Round to the nearest tenths place.
2 answers:
Answer:
x ≈ 6.6
Step-by-step explanation:
Use Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
x² + ( )² = 7²
x² + 5 = 49 ( subtract 5 from both sides )
x² = 44 ( take the square root of both sides )
x = ≈ 6.6 ( to the nearest tenth )
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Answer:
450 ounces
Step-by-step explanation:
We know that the cost of the mixture must be the cost of the everyday moisturizing lotion
plus the cost of the self-tanning lotion
, which means
.
The cost of any substance will be the cost per ounce of the substance (c), multiplied by the number of ounces (n), which means C=nc, so we have from the previous formula that we have:
But we also know that the number of ounces of the mixture must be the sum of the number of ounces of the everyday moisturizing lotion with the number of ounces of the self-tanning lotion, so we have
We want to calculate the number of ounces of the self-tanning lotion (), so we solve for that variable:
And substitute our values in this formula, to get: