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Rzqust [24]
3 years ago
6

Help please! And thank u

Mathematics
2 answers:
Radda [10]3 years ago
6 0
A/7 + a/3 = 10
a = 21
Zigmanuir [339]3 years ago
6 0

Answer:

\frac{a}{7}  +  \frac{a}{3}  = 10 \\  \frac{(3a + 7a)}{21}  = 10 \\  \frac{10a}{21}  = 10 \\ a =  \frac{(10 \times 21)}{10}  \\  \boxed{a = 21}

<h3><u>a=21</u> is the right answer.</h3>
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The hypotenuse of a 30 -60 -90 triangle is 13cm. What is the length of the shorter leg?
Ivahew [28]

Answer:

(13/2) cm

Step-by-step explanation:

The hypotenuse here is of length 13 cm.  The shorter leg lies opposite to the 30° angle.  Recall that the sine function is defined as

              opposite side

sin Ф = -----------------------

                 hypotenuse

which, in this case, works out to:

                opposite side

sin 30° = -----------------------

                       13 cm

and so the length of the opposite side (which is also the "shorter leg") is

shorter leg length = (13 cm)(sin 30°) = (13 cm)(1/2) = (13/2) cm

6 0
2 years ago
Terrell got 1 3/4 pounds of ground meat and 2 1/6 of ground chicken. he used 1 2/3 pounds of ground chicken to make a casserole.
babunello [35]

Answer:

Okay so we have to solve this in separate parts. Like so, its wiill go like this: 2+ 1/6 - 1 - 2/3. So we see that we have 2 and 1 as whole. Subtract 2 - 1 is 1 right. Now for fractional part 1/6 - 2/3. Since its uneven, we have to find the LCD which is 6. This forms of our fractions into 1/6- 4/6. 1/6 - 4/6 is 3/6. simplify it would result in 1/2.  The amount of ground chicken that Terrell has left is 1/2.

8 0
2 years ago
How much do a dozen cookies weigh?
yaroslaw [1]
0.43 oz

                   Hope this helps...
7 0
3 years ago
Read 2 more answers
Solve the inequality. −3y&lt;−14
Artyom0805 [142]

Answer: y>14/3

Step-by-step explanation:

3 0
2 years ago
1. -3x=21<br> 2. 13x=6<br> 3. -12x=-7<br> answer the equation for points and brainiest.
andre [41]

Answer:

1. x = -7

2. x = 6/13

3. x = 7/12

Step-by-step explanation:

1. x = 21 / -3

x = -7

2. 13x = 6

x = 6 / 13

x = 6/13

3. -12x = -7

x = -7 / -12

x = 7/12

<em>Hope that helps!</em>

3 0
2 years ago
Read 2 more answers
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