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muminat
3 years ago
15

Using the numbers 8, 6, 4 write an expression that equals 7

Mathematics
1 answer:
8090 [49]3 years ago
4 0

\dfrac{8-4}{4}+6=\dfrac{4}{4}+6=1+6=7


8-\dfrac{8-6}{6-4}=8-\dfrac{2}{2}=8-1=7


\dfrac{8+6}{6-4}=\dfrac{14}{2}=7

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Find the circumference and area of a circle with the diameter AB,<br> A(-8,4) and B(4,-1)
bezimeni [28]

\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ A(\stackrel{x_1}{-8}~,~\stackrel{y_1}{4})\qquad B(\stackrel{x_2}{4}~,~\stackrel{y_2}{-1})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ AB=\sqrt{[4-(-8)]^2+[-1-4]^2}\implies AB=\sqrt{(4+8)^2+(-1-4)^2} \\\\\\ AB=\sqrt{144+25}\implies AB=\sqrt{169}\implies \stackrel{\textit{diameter}}{AB=13}~\hfill \boxed{\stackrel{\textit{radius}}{6.5}} \\\\[-0.35em] ~\dotfill

\bf \textit{circumference of a circle}\\\\ C=2\pi r\qquad \qquad C=2\pi (6.5)\implies C=13\pi \implies C\approx 40.84 \\\\\\ \textit{area of a circle}\\\\ A=\pi r^2\qquad \qquad A=\pi (6.5)^2\implies A=42.25\pi \implies A\approx 132.73

5 0
3 years ago
Solve five ninths plus four sixths.
Keith_Richards [23]

Answer:

69

Step-by-step explanation:

90-69+420=666

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6 0
3 years ago
4/12 + 3/12 = ???????
iris [78.8K]
7/12

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4 0
3 years ago
Read 2 more answers
ella is making 3 batches of banana milkshake she needs 3/4 gallon of milk for each bath.Her measuring cup holds 1/4 gallon.How m
Dmitry [639]
1 batch need 3/4 gallon of milk

She has 1/4 gallon cup

(3/4) divided by (1/4)

A technique in math is just flip the divider which is (1/4) to (4/1)
so it becomes (3/4) multiply (4/1) = (3x4) / (4x1) = 12/4 = 3 times for one batch

She needs three batches so 3 x 3 = 9 times to fill the measuring cup to make all 3 batches of milkshake.
3 0
4 years ago
Please help I need the right answer and I will mark you as brainlist if done right
Mademuasel [1]
(-3,1) is the answer.
4 0
3 years ago
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