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Firdavs [7]
3 years ago
13

Blake simplified the expression (StartFraction x Superscript 12 Baseline Over x Superscript negative 3 Baseline EndFraction) Sup

erscript 5 to StartFraction 1 Over x Superscript 20 Baseline EndFraction. What was Blake’s mistake?
Mathematics
2 answers:
ziro4ka [17]3 years ago
9 0

Answer:

D on E2020. (Divided exponents instead of subtracting)

Step-by-step explanation:

elena-s [515]3 years ago
6 0

Answer:

D.

Step-by-step explanation:

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Evaluate the expression if r = 12 and t = -6.<br> (t-r)/3
Lynna [10]

Answer:

-6

Step-by-step explanation:

\frac{(t-r)}{3}

input the numbers

\frac{(-6-12)}{3}

do the problem in the parentheses first

-6-12 = -18

now it becomes

-\frac{18}{3}

simplify and you'll get

-6

this is because -18 ÷ 3 =

-6

4 0
3 years ago
Read 2 more answers
Evaluate the definite integral using the graph of f(x)<br> (Image included)
Tanya [424]

a) The first integral corresponds to the area under y = f(x) on the interval [0, 3], which is a right triangle with base 3 and height 5, hence the integral is

\displaystyle \int_0^3 f(x) \, dx = \frac12 \times 3 \times 5 = \boxed{\frac{15}2}

b) The integral is zero since the areas under the curve over [3, 4] and [4, 5] are equal but opposite in sign. In other words, on the interval [3, 5], f(x) is symmetric and odd about x = 4, so

\displaystyle \int_3^5 f(x) \, dx = \int_3^4 f(x) \, dx + \int_4^5 f(x) \, dx = \int_3^4 f(x) \, dx - \int_3^4 f(x) \, dx = \boxed{0}

c) The integral over [5, 9] is the negative of the area of a rectangle with length 9 - 5 = 4 and height 5, so

\displaystyle \int_5^9 f(x) \, dx = -4\times5 = -20

Then by linearity, we have

\displaystyle \int_0^9 f(x) \, dx = \left\{\int_0^3 + \int_3^5 + \int_5^9\right\} f(x) \, dx = \frac{15}2 + 0 - 20 = \boxed{-\frac{25}2}

8 0
2 years ago
The Barkers started their trip with a full tank of gas and a total of 39,872 miles on their car. They stopped 4 hours later and
lara [203]

Answer:

27.5 miles per gallon

Step-by-step explanation:

3 0
1 year ago
Name a quadrilateral with exactly two pairs of congruent angles.
Inessa [10]

parallogram it has exactly 2 pairs of congruent angles

7 0
2 years ago
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What is the answer to the question?
Naily [24]
It is 1/3, add up the total number of kids, which is 30, the number of kids 6-8 is 10. 10/30 is equivalent to 1/3
5 0
3 years ago
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