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3 years ago

CLASS 6 MATHS!!!! HELP ME PLEASE!!!!!!!

Mathematics

1 answer:

Elanso [62]3 years ago

6 0

Step-by-step explanation:

$\\ 20. \: \: ( \frac{ - 3}{4} )(4\frac{1}{6} )$

$\\ = \frac{ - 3}{4} \times \frac{25}{6}$

$\\ = \frac{ - 25}{8}$

$\\ = - 3.125$

$\\ 21. \: \: ( - 3\frac{7}{8} )( - 5\frac{3}{4} )$

$\\ = \frac{ - 31}{8} \times \frac{ - 23}{4}$

$\\ = \frac{713}{32}$

$\\ = 22.28125$

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For every 9 black and white copies printed there are 2 color copies printed. If there are 200 color copies printed how many blac

alexandr402 [8]

Answer:

900 black and white copies are printed.

Step-by-step explanation:

Given:

For every 9 black and white copies printed there are 2 color copies printed.

If there are 200 color copies printed.

Now, to find the number of black and white copies are printed.

Let the number of black and white copies printed be $x.$

As given, for every 9 black and white copies printed there are 2 color copies printed.

So, 9 is equivalent to 2.

If there are 200 color copies printed.

Thus, $x$ is equivalent to 200.

Now, to solve by using cross multiplication method:

$\frac{9}{2} =\frac{x}{200}$

By cross multiplying we get:

$1800=2x$

Dividing both sides by 2 we get:

$900=x$

$x=900.$

Therefore, 900 black and white copies are printed.

8 0

4 years ago

Read 2 more answers

mrs.smith owned one square mile of land. when she moved she gave an equal part of the land to her 3 children,amy,brianna ,and ch

Black_prince [1.1K]

Mrs.smith divided one square mile of land to her 3 children,amy,brianna ,and chad.

1 mile is divided among each children . so the fraction of land each one get is $\frac{1}{3}$

Amy's land = $\frac{1}{3}$

Brianna's land = $\frac{1}{3}$

Chad's land = $\frac{1}{3}$

Amy decided to divide her portion of the land equally between her 2 children.

We know Amys land = 1/3

1/3 is divided among two children so we divide the fraction by 2

$\frac{\frac{1}{3}}{2}$ = $\frac{1}{3} * \frac{1}{2}$

= $\frac{1}{6}$

$\frac{1}{6}$ fraction of mrs. smith's land one of amy's children own.

Chad divided his land equally among his 6 children

We know Amys land = 1/3

1/3 is divided among 6 children so we divide the fraction by 6

$\frac{\frac{1}{3}}{6}$ = $\frac{1}{3} * \frac{1}{6}$

= $\frac{1}{18}$

$\frac{1}{18}$ fraction of mrs. smith's land one of Chad's children own.

4 0

4 years ago

Determine the volume of a cube with side lengths of 2 1/4 cm.

jeka94

The formula for volume of a cube is V = S^3 where S is the length of a side.

Volume = 2 1/4^3

Volume = 2 1/4 x 2 1/4 x 2 1/4

Volume = 11 25/64 as a fraction or 11.390625 as a decimal.

5 0

4 years ago

5. Mrs. Stabile has a one-story house that is 32 feet wide and 48 feet long. She plans to build an addition 12 feet by 16 feet.

kykrilka [37]

(32*48)+(12*16)=1728

5 0

4 years ago

Find the circumference and the area of a circle with diameter 2 yd . Use the value for 3.14 for , and do not round your answers.

Bess [88]

Answer:

The circumference and the area of the circle are 6.28 yards and 3.14 yd² respectively.

Step-by-step explanation:

Circumference: This is defined as the distance around a circle.

The circumference of a circle is

P = πd............................. Equation 1

Where p = circumference of the circle, d = diameter of the circle

Area: This is the region bounded by a plane surface.

The area of a circle is

A = πd²/4 .................................. Equation 2

Where A = area of the circle, π = pie = constant.

Given: d = 2 yd.

Constant: π = 3.14

Substituting these values into equation 1 and 2 respectively.

P = 3.14(2)

P = 6.28 yard.

P = 6.28 yd

and

A = 3.14(2)²/4

A = 3.14×4/4

A = 3.14 yd²

Thus the circumference and the area of the circle are 6.28 yards and 3.14 yd² respectively.

3 0

3 years ago

CLASS 6 MATHS!!!! HELP ME PLEASE!!!!!!!​

CLASS 6 MATHS!!!! HELP ME PLEASE!!!!!!!