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3 years ago

Pleaseeee helpp answer correctly !!!!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!

Mathematics

2 answers:

Oliga [24]3 years ago

7 0

Answer:

26 cm!

If A extends to O which is half of the rectangle, and we need BD... We times AO by two to get BD. :)

bekas [8.4K]3 years ago

3 0

Answer:

26 cm

Step-by-step explanation:

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What is the difference between 5/6 − 5/12? Use the fraction strip to help.

ANEK [815]

Answer:

Step-by-step explanation:

8 0

3 years ago

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Could somebody please help me find the answers for 'x' for these pictures?

lesya692 [45]

Answer:

Pic 1: $x=31$

Pic 2: $x=20$

Step-by-step explanation:

Picture 1:

$2x+x-3=90\\3x-3=90\\3x=93\\x=31$

First, add the 2x and x together for 3x

Then add 3 to both sides of the equation

Finally, divide each side by 3.

Picture 2:

$7x+x+20=180\\8x+20=180\\8x=160\\x=20$

First, add 7x and x together for 8x

Then, minus 20 from both sides of the equation

Finally, divide each side by 8.

8 0

2 years ago

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A force of 8 lb is required to hold a spring stretched 8 in. beyond its natural length. How much work W is done in stretching it

-BARSIC- [3]

Answer:

The work done in stretching it from its natural length to 14 in. beyond its natural length is W=8.17 ft-lb.

Step-by-step explanation:

We know that a force of 8 lb is required to hold a spring stretched 8 in. beyond its natural length.

This let us calculate the spring constant k as:

$F=kx\\\\k=F/x=(8 \;lb)/(8\;in)=1\;lb/in$

We know that work is, in an scalar form, the product of force and distance.

The force F is equal to the spring constant multiplied by the distance from the natural length.

Then, as the force changes with the distance from the natural length, we have to calculate integrating:

$W=\int_0^{14}F\,dx=\int_0^{14}kx\,dx\\\\\\W=\dfrac{1}{2}kx^2\left|^{14}_0=\dfrac{1}{2}(1\,lb/in)(14 \,in)^2-\dfrac{1}{2}(1\,lb/in)(0 \,in)^2$

$W=98lb\cdot in-0lb-in\\\\W=98(lb\cdot in)\cdot \dfrac{1 \,ft}{12\,in}=8.17\;lb\cdot ft$

5 0

3 years ago

BRAINLEST IF CORRECT!!!!which of the d-values satisfy the following inequality? d/5>4

irinina [24]

Answer:

d = 25

Step-by-step explanation:

$\frac{d}{5} >4$

The value of d has to satisfy the inequality

so replace d with one of the given options

$\frac{25}{5} >4$

We have to simplify the fraction first

$\frac{25}{5} =5>4$

5 0

3 years ago

Charmaine cutaway 3.65 meters of rope. Before that, she had 9 meters of rope. How much rope does Charmaine have left?

mihalych1998 [28]

Answer:

5.35

Step-by-step explanation:

9-3.65=5.35

4 0

3 years ago