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3 years ago

6

I have a number between 60 and 80. I have a remainder of 3 when divided by 4. I have a remainder of 1 when divided by 7. What nu

mber am I?
Thanks

1 answer:

Murljashka [212]3 years ago

6 0

Answer:

71

Step-by-step explanation:

Divide 71 by 7 and you get 10 and 1 leftover. Divide 71 by 4 and you get 17 with 3 leftover.

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A car drove 10/45 miles in 0.4 hours. How fast was the car traveling in miles per hour?

BARSIC [14]

Answer:

1.2 hours equal to 30mph

Step-by-step explanation:

Pls mark brainliest

7 0

3 years ago

Solve (x + 1)2 – 4(x + 1) + 2 = 0 using substitution.

solniwko [45]

For this case we have to:

Let $u = x + 1$

So:

$u ^ 2-4u + 2 = 0$

We have the solution will be given by:

$u = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2 (a)}$

Where:

$a = 1\\b = -4\\c = 2$

Substituting:

$u = \frac {- (- 4) \pm \sqrt {(- 4) ^ 2-4 (1) (2)}} {2 (1)}\\u = \frac {4 \pm \sqrt {16-8}} {2}\\u = \frac {4 \pm \sqrt {8}} {2}\\u = \frac {4 \pm \sqrt {2 ^ 2 * 2}} {2}\\u = \frac {4 \pm2 \sqrt {2}} {2}$

The solutions are:

$u_ {1} = \frac {4 + 2 \sqrt {2}} {2} = 2 + \sqrt {2}\\u_ {2} = \frac {4-2 \sqrt {2}} {2} = 2- \sqrt {2}$

Returning the change:

$2+ \sqrt {2} = x_ {1} +1\\x_ {1} = 1 + \sqrt {2}\\2- \sqrt {2} = x_ {2} +1\\x_ {2} = 1- \sqrt {2}$

Answer:

$x_ {1} = 1 + \sqrt {2}\\x_ {2} = 1- \sqrt {2}$

3 0

3 years ago

Read 2 more answers

How do you Find the acute Angle A when sinA=0.616?

kirill [66]

Answer:

arcsin0.616

Step-by-step explanation:

arcsino.616

4 0

3 years ago

The lines y=-2 and y=-7 are they parallel, perpendicular, or neither?

Vanyuwa [196]

Answer:

parallel

Step-by-step explanation:

An equation of the form

y = k

where k is a number is a horizontal line.

Since both lines have the form y = k, with two different values of k, -2 and -7, these are two different horizontal lines, so they are parallel.

Answer: parallel

7 0

3 years ago

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A right triangle has one side that measures 4in. The angle opposite that side measures 80 degrees. What is the length of the hyp

Crazy boy [7]

Hello from MrBillDoesMath!

Answer:

4/sin(80)

which is approximately 4.06

Discussion:

From the triangle, not drawn too accurately (see attachment)

sin(80) = side opposite /hypotenuse =>

sin (80) = 4/c => multiply both sides by "c"

c sin(80) = 4/c * c =>

c sin(80) = 4 => divide both sides by sin(80)

c = 4/sin(80)

and 4/sin(80) is approximately 4.06

Thank you,

MrB

6 0

3 years ago