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3 years ago

10

Find the value of X on this proportion

2 answers:

rosijanka [135]3 years ago

5 0

solving proportions is simply a matter of stating the ratios as fractions, setting the two fractions equal to each other, cross-multiplying, and solving the resulting equation. You'll probably start out by just solving proportions, like this:

<span><span><span>Find the unknown value in the proportion:  </span><span>2 : x = 3 : 9.</span></span><span>2<span> :</span> x = 3<span> :</span> 9</span>First, I convert the colon-based odds-notation ratios to fractional form:.Then I solve the proportion:<span>
</span><span>9(2) = </span><span>x(3)</span> <span>
1</span><span>8 = 3x</span><span>
</span><span>6 = x</span></span><span><span><span>Find the unknown value in the proportion:  </span><span>(2x + 1) : 2 = (x + 2) : 5</span></span><span>(2x + 1)<span> :</span> 2 = (x + 2)<span> :</span> 5</span><span><span> ADVERTISEMENT</span><span> </span></span>First, I convert the colon-based odds-notation ratios to fractional form:Then I solve the proportion:<span>
</span><span>5(2x + 1) = 2(x + 2)</span><span>
</span><span>10x + 5 = 2x + 4</span><span>
</span><span>8x  = –1</span><span>
</span><span>x = –1/<span>8</span></span></span>

Serga [27]3 years ago

4 0

Answer:

the answer is c .

Step-by-step explanation:

8 1/10 , took it on edgenuity.

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Malcolm ran the 440-yard dash and the 220-yard dash at a track meet there are 3 feet in one yard how many total feet did Malcolm

masha68 [24]

1980 feet because 440+220=660 and 660 times 3 is 1980

4 0

4 years ago

Read 2 more answers

Solve this step by step using the quadratic function <br> y=x^2 +x+2

Ne4ueva [31]

Answer:

x=<u>+</u> $\frac{\sqrt{4y-7}-1 }{2}$

Step-by-step explanation:

Quadratic function =( -b<u>+</u> $\sqrt{b^2+4ac}$ )/2a

x^2+x+2-y=0

x=-1<u>+</u> $\sqrt{1^2-4(2-y)}$ /2

x=-1<u>+</u> $\sqrt{4y-7}$ /2

x=<u>+</u> $\frac{\sqrt{4y-7}-1 }{2}$

Pretty sure this is right. Would appreciate a brainliest

3 0

3 years ago

Bogdan [553]

9514 1404 393

Answer:

(a) 2 * 2 * 2 * 2 x 5

Step-by-step explanation:

80 = 16×5 = 2⁴×5 = 2·2·2·2×5

7 0

3 years ago

If 7x =1 find the decimal value of X (x=1/7)

Delicious77 [7]

Answer:

0.143 to the nearest thousandth.

Step-by-step explanation:

7x = 1

To find the value of x be divide both sides of the equation by 7:

7x/7 = 1/7

x = 1/7

Converting to decimal:

1/7 = 0.1428571429.

3 0

3 years ago

Read 2 more answers

1. If r = 5, s = 2, t = 7, and u = 1 then evaluate the expression: s + 7 *

rosijanka [135]

Answer:

1. s + 7 = 9

2. 5r - 4 = 21

3. t - s = 5

4. u + r = 6

5. 11t - 7 = 70

6. 6 + 3u = 9

7. 4r - 10s = 0

8. r with an expnent of 2 +8 = $r^{2} + 8 = 33$

9. 30 over r = $\frac{30}{5}$ =6

10. 2t with an exponent of 2-18 = $(2t)^{2} - 18 = 178$

Step-by-step explanation:

1. If r = 5, s = 2, t = 7, and u = 1 then,

s + 7 = 2 + 7 = 9

2. If r = 5, s = 2, t = 7, and u = 1 then,

5r - 4 = 5(5) - 4 = 25 - 4 = 21

3. if r = 5, s = 2, t = 7, and u = 1 then,

t - s = 7 - 2 = 5

4 .If r = 5, s = 2, t = 7, and u = 1 then,

u + r = 1 + 5 = 6

5. If r = 5, s = 2, t = 7, and u = 1 then,

11t - 7 = 11(7) - 7 = 77 - 7 = 70

6. If r = 5, s = 2, t = 7, and u = 1 then,

6 + 3u = 6 + 3(1) = 6 + 3 = 9

7. If r = 5, s = 2, t = 7, and u = 1 then,

4r - 10s = 4(5) - 10(2) = 20 - 20 = 0

8. If r = 5, s = 2, t = 7, and u = 1 then,

r with an exponent of 2 +8 = $r^{2} + 8 = 5^{2} + 8 = 25 + 8 = 33$

9. If r = 5, s = 2, t = 7, and u = 1 then,

30 over r = $\frac{30}{r} = \frac{30}{5} = 6$

10.If r = 5, s = 2, t = 7, and u = 1 then,

2t with an exponent of 2-18 = $(2t)^{2} - 18 = (2.7)^{2} - 18 = (14)^{2} - 18 = 196 - 18 = 178$

7 0

3 years ago