All categories

3 years ago

How we solve a b and c

Mathematics

1 answer:

Studentka2010 [4]3 years ago

8 0

For a. 55greater than equal to X less than equal to 80

You might be interested in

Which of the following numbers are square roots of 64? Check all that apply.

Shkiper50 [21]

Answer:

B AND D

Step-by-step explanation:

Because 8*8=64 and -8*-8=64

p.s

can u mark me brainliest?

5 0

3 years ago

Read 2 more answers

Find the length of the height of the right trapezoid shown below, if it has the greatest possible area and its perimeter is equa

Artyom0805 [142]

Answer:

The height of the right trapezoid is $\frac{6}{5+\sqrt{3}}\ units$

Step-by-step explanation:

Let

x ----> the height of the right trapezoid in units

we know that

The perimeter of the figure is equal to

$P=AB+BC+CD+DH+HA$

we have

$P=6\ units$

$AB=BC=CH=HA=x$ ---> because is a square

substitute

$6=x+x+CD+DH+x$

$6=3x+CD+DH$ -----> equation A

In the right triangle CDH

$sin(30\°)=\frac{CH}{CD}$

$sin(30\°)=\frac{1}{2}$

Remember that $CH=x$

$\frac{1}{2}=\frac{x}{CD}$

$CD=2x$

$tan(30\°)=\frac{CH}{DH}$

$tan(30\°)=\frac{\sqrt{3}}{3}$

$\frac{\sqrt{3}}{3}=\frac{x}{DH}$

$DH=x\sqrt{3}$

substitute the values in the equation A

$6=3x+CD+DH$ -----> equation A

$CD=2x$

$DH=x\sqrt{3}$

$6=3x+2x+x\sqrt{3}$

$6=5x+x\sqrt{3}$

$6=x[5+\sqrt{3}]$

$x=\frac{6}{5+\sqrt{3}}\ units$

5 0

3 years ago

HELP! Evaluate. 45 + 22 ÷ 11 • {[(60 – 15) • 60] + 25}

siniylev [52]

Step-by-step explanation: [(60 – 15) • 60] + 25} = 45.60 +25

=2725

45 + 22 ÷ 11. 2725

45 + 2 . 2725

45+ 5450

=5495

4 0

3 years ago

X-6y=-2 (0,-5) perpendicular lines *i need to show my work*

olga55 [171]

Answer:

what in the world is this math?

Step-by-step explanation:

6 0

3 years ago

Factorize: (a+1) (a+2)

eimsori [14]

Answer:

a^2+3a+2

Step-by-step explanation:

(a+1)(a+2)

a(a+2)+1(a+2)

a^2+2a+a+2

a^2+3a+2

5 0

4 years ago