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gavmur [86]
3 years ago
12

Help me please . I don't know which method to use. maybe the time=

Mathematics
1 answer:
stepladder [879]3 years ago
6 0
56/2,8 due to the fact that the speed reduced one hour
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in a week karry ran 9.3 miles and Tricia ran 4.4 miles. Use mental math to find how much farther Karry ran than Tricia. Explain
Ede4ka [16]

i would just round 9.3 to 9 and 4.4 to 4 so i subtract 9-4 so that equals 5 so about a 5 mile diffrence

6 0
4 years ago
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A circle has a radius that measures 9 centimeters what is the area of the circle to the nearest tenth use pie 3.14​
Tanzania [10]

Step-by-step explanation:

<em>Given</em>

<em>radius </em><em>(</em><em>r) </em><em> </em><em>=</em><em> </em><em>9</em><em> </em><em>cm</em>

<em>Area </em><em>of </em><em>the </em><em>circle </em><em>(</em><em>A) </em><em> </em>

<em>=</em><em> </em><em>π</em><em>r²</em>

<em>=</em><em> </em><em>3</em><em>.</em><em>1</em><em>4</em><em> </em><em>*</em><em> </em><em>9</em><em>²</em>

<em>=</em><em> </em><em>3</em><em>.</em><em>1</em><em>4</em><em> </em><em>*</em><em> </em><em>8</em><em>1</em>

<em>=</em><em> </em><em>2</em><em>5</em><em>4</em><em>.</em><em>3</em><em>4</em><em> </em><em>cm²</em>

5 0
3 years ago
solve the following pair of linear equation 2x+3y=5 , 7x-5y=2 has a unique solution if yes find the solution
slava [35]

Answer:

(1, 1 )

Step-by-step explanation:

Given the 2 equations

2x + 3y = 5 → (1)

7x - 5y = 2 → (2)

Multiplying (1) by 5 and (2) by 3 and adding will eliminate the y- term

10x + 15y = 25 → (3)

21x - 15y = 6 → (4)

Add (3) and (4) term by term to eliminate y

31x = 31 ( divide both sides by 31 )

x = 1

Substitute x = 1 into either of the 2 equations and evaluate for y

Substituting into (1)

2(1) + 3y = 5

2 + 3y = 5 ( subtract 2 from both sides )

3y = 3 ( divide both sides by 3 )

y = 1

Solution is (1, 1 )

8 0
4 years ago
Read 2 more answers
Solve for x:<br><br> 2x + 30 = (30/10) * 5(2x + 3) + 87
Svetllana [295]
Answer:
x = -9.375
im not sure if i interpreted the times symbol right

step-by-step explanation:
2x + 30 = (30/10) • 5(2x + 3) + 87
2x + 30 = 3 • 10x + 15 + 87
2x + 30 = 105 • 10x
-2x -2x
30 = 105 • 8x
-105 -105
-75 = 8x
/8 /8
-9.375 = x ?
4 0
3 years ago
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What is 8.57 as a fraction or a mixed number
AURORKA [14]
8\frac{57}{100} or \frac{857}{100}
7 0
4 years ago
Read 2 more answers
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