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4 years ago

2r-3.1=1.7 solve each equation check your soultion plz help step by step plz

Mathematics

1 answer:

professor190 [17]4 years ago

8 0

2r-3.1=1.7 add 3.1

2r=1.7+3.1 divide by 2 to isolate r

2r/2=4.8/2

r=2.4

check

2(2.4)-3.1=1.7

4.8-3.1=1.7

1.7=1.7

4t+3.5=12.5 sub 3.5

4t=12.5-3.5 divide by 4

4t/4=9/4

t=9/4

check

4(9/4)+3.5=12.5

9+3.5=12.5

12.5=12.5

8m-5.5=10.1 add 5.5

8m=10.1+5.5 divide by 8

8m/8=15.6/8

m=1.95

check

8(1.95)-5.5=10.1

15.6-5.5=10.1

10.1=10.1

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Step-by-step explanation:

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4 years ago

(60 points to best answer) (asap please and thank you)

inna [77]

Answer: $83.\overline{3}\text{ feet}$

Step-by-step explanation:

Since, In the given diagram,

The sides of the triangles ABC and EDC are,

BC = 62 feet, DC = 93 feet and DE = 125 feet(given)

And, angles B and D are right angles,

⇒ $\angle ABC\cong \angle EDC$

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By AA similarity postulate,

$\triangle ABC\sim \triangle EDC$

The sides of similar triangles are in same proportion ,

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By substituting the values,

We get,

⇒ $AB = \frac{62\times 125}{93}$

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4 years ago

A carpenter has a piece of wood that is 10 yards long and a piece that is 5 feet long. How many feet of wood does the carpenter

erica [24]

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3 years ago

Your friends shuffle the cards and then deal them. Select probability of getting a red card. Select probability of getting a spa

sladkih [1.3K]

Answer:

1/2 ; 1/4

Step-by-step explanation:

Number of cards in a deck = 52

Number of red cards = 26

Number of spades = 13

Probability of event A :

P(A) = required outcome / Total possible outcomes

P( red card) = number of red cards / total cards in deck

P(red card) = 26 / 52 = 1/2

P(spade) = number of spades / total cards in deck

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3 years ago

Write the equation of the given circle.<br><br> center (1, -5)<br> radius of 10

Naddika [18.5K]

Answer:

$(x-1)^2+(y+5)^2=100$

Step-by-step explanation:

The equation of a circle has the following form:

$(x-h)^2+(y-k)^2=r^2$ where (h,k) is the center of a circle with radius r.

Our equation center is (1.-5) and radius is 10.

$(x-1)^2+(y--5)^2=10^2$

$(x-1)^2+(y+5)^2=100$

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3 years ago