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Anettt [7]
3 years ago
6

Evaluate 8a-1+0.5b8a−1+0.5b8, a, minus, 1, plus, 0, point, 5, b when a=\dfrac14a=

Mathematics
2 answers:
professor190 [17]3 years ago
7 0

Answer: 6

Step-by-step explanation:

Given the following expression:

8a-1+0.5b

You need to substitute the given values of "a" and "b" into the expression. Notice that these values are:

a=\frac{1}{4}\\\\b=10

Then;

 8a-1+0.5b=8(\frac{1}{4})-1+0.5(10)

Now you must solve the multiplications:

=\frac{8}{4}-1+5=2-1+5

The final step is to add the numbers. Therefore, you get the following answer:

=6

mart [117]3 years ago
5 0

Answer: 6

Step-by-step explanation:

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Please help!! MathsWatch, Surd Expressions, Clip 207c
dexar [7]

Answer:

A=(72+36\sqrt{3})\ mm^2

Step-by-step explanation:

see the attached figure with letters to better understand the problem

Let

a ----> the height of rectangle in mm

b ---> the base of rectangle in mm

step 1

Find the base of rectangle

b=AB+BC+CD+DE ----> by segment addition postulate

substitute

b=3+3+3+3=12\ mm

step 2

Find the height of rectangle

a=FB+CG+GH ---> by segment addition postulate

substitute the given values

a=3+CG+3\\a=6+CG

Find the length sides CG

Applying the Pythagorean Theorem

BG^2=BC^2+CG^2

substitute the given values

6^2=3^2+CG^2

CG^2=6^2-3^2

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simplify

CG=3\sqrt{3}\ mm

therefore

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step 3

Find the area of rectangle

A=ab

we have

a=(6+3\sqrt{3})\ mm

b=12\ mm

substitute

A=(6+3\sqrt{3})(12)=(72+36\sqrt{3})\ mm^2

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3 years ago
Amelia machine changes one red token into three white tokens and one white token into two red tokens. amelia has three red token
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vredina [299]

Answer:

Step-by-step explanation:

7 feet   1 foot is 12 inches

7*12= 84 inches.

None of the choices are correct.

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75 inches is 6.25 feet

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2 years ago
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