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3 years ago

Multiply row 2 by the reciprocal of −40:

Mathematics

2 answers:

olga_2 [115]3 years ago

8 0

Answer:

answers down below :p

Step-by-step explanation:

Jet001 [13]3 years ago

3 0

Answer:

first answer is 1 second is negative -1 answer for edge 2021

Step-by-step explanation:

correct

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How to write 8,409,120 in words form

Yakvenalex [24]

eight million four hundred nine thousand one hundred twenty

3 0

2 years ago

Read 2 more answers

HELP ASAP!!!!!!!! what is the unit rate expressed in price per pound

maxonik [38]

Answer:

$0.80

Step-by-step explanation:

You have to divide 24 by 30 to find the price per pound

5 0

2 years ago

Work out the area of a rectangle with base 18mm and perimeter 38mm

frez [133]

Answer:

684 mm squared

Step-by-step explanation:

Very simple. It's 18mm multiplied by 38 mm.

18 mm * 38 mm = 684 mm2

5 0

2 years ago

A 10-mL graduate weighs 42.745 g. When 5 mL of distilled water are measured in it, the combined weight of graduate and water is

Bingel [31]

Answer:

The measured weight of the water = 4.93 g

The percentage error in measured value = 1.4%

Step-by-step explanation:

Given:

Weight of the 10-mL graduate = 42.745 g

Combined weight of graduate and 5 mL water = 47.675 g

5 mL of water should weight = 5 g

thus, actual value of 5 mL water = 5 g

Now,

The measured weight of the water

= (Combined weight of graduate + 5 mL water) - Weight of the 10-mL graduate

= 47.675 g - 42.745 g

= 4.93 g

The percentage error in measured value

= $\frac{\textup{Actual value-calculated value}}{\textup{Actual value}}\times100$

= $\frac{\textup{5-4.93}}{\textup{5}}\times100$

= 1.4%

7 0

3 years ago

A block with a mass m = 5 kg slides down an inclined plane with an angle θ = 37°. The block maintains a constant acceleration a

OleMash [197]

Answer:1148.6 N

Step-by-step explanation:

Given

mass of block =5 kg

Inclination angle $\theta =37^{\circ}$

constant acceleration(a) $=5.6m/s^2$

$\mu$ be the coefficient of kinetic friction =0.05

we know friction force $=\mu N$

forces acting on block is $mgsin\theta$ down the inclined plane

friction force acting parallel to surface opposing $mgsin\theta$

Therefore

$mgsin\theta - \mu N=ma$

$\frac{m\left ( gsin\theta +a\right )}{\mu }=N$

$N=\frac{5\left ( 9.81\times 0.6+5.6\right )}{0.05}$

N=1148.6 N

6 0

2 years ago