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3 years ago

Simplify the expression 7y+6-1+12y

Mathematics

2 answers:

Olegator [25]3 years ago

5 0

Answer:

19y+5

Step-by-step explanation:

Katena32 [7]3 years ago

3 0

Answer: 5+5y

Step-by-step explanation:

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a boat is going 144 miles upstream on a river. the speed of the boat in still water is 60 miles per hour. the speed of the river

Katena32 [7]

Answer:

Let b = rate of the boat.

Let r = rate of the river.

The rate going downstream is b + r.

The rate going upstream is b - r.

rate x time = distance

4(b + r) = 144 ---> b + r = 36 [divide both sides by 4]

9(b - r) = 144 ---> b - r = 16 [divide both sides by 9]

Add town: 2b = 52

Divide by : b = 26 mi/hr

r = 10 mi/hr

Step-by-step explanation:

5 0

2 years ago

Evaluate the expression a divided by b for a=24 and b=3

emmainna [20.7K]

The answer is 8...............

4 0

3 years ago

Please Help!

JulijaS [17]

Answer: $8865=6000(1+\frac{5\times t}{100})$

Step-by-step explanation:

Given

Liam deposited $P=\$\ 6000$

Rate of interest is $R=5\ \%$

If the amount after t years is $A=\$\ 8865$

Simple interest is given by

$S.I.=\dfrac{P\times R\times t}{100}$

And amount is

$A=P+S.I.$

$A=P(1+\frac{R\times t}{100})$

Substituting values we get

$8865=6000(1+\frac{5\times t}{100})$

$1.4775=1+\frac{5\times t}{100}$

$0.4775\frac{5\times t}{100}$

$5t=47.75$

$t=\frac{47.75}{5}=9.55\ years$

8 0

3 years ago

A dilation with a scale factor of 2 is applied to the three line segments shown. The resulting images are P′Q′¯¯¯¯¯¯¯, A′B′¯¯¯¯¯

ivanzaharov [21]

Answer:

Step-by-step explanation:

Formula to determine the scale factor,

Scale factor = $\frac{\text{Dimension of the image}}{\text{Dimension of the original}}$

2 = $\frac{P'Q'}{PQ}$

2 = $\frac{P'Q'}{2}$

P'Q' = 4 cm

Similarly, for the length of A'B',

2 = $\frac{A'B'}{AB}$

2 = $\frac{A'B'}{1.5}$

A'B' = 3 cm

For the length of M'N',

2 = $\frac{M'N'}{MN}$

2 = $\frac{M'N'}{3}$

M'N' = 6 cm

4 0

3 years ago

Nonsense will be reported!!

Contact [7]

Answer:

See below

Step-by-step explanation:

d = 78° (Vertical angles)

h = 70° (Vertical angles)

Measure of angles d and h are are not equal. therefore they are not congruent.

7 0

2 years ago