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Tems11 [23]
3 years ago
12

The one on the bottom asap! 6th grade math pre-ap

Mathematics
1 answer:
Nikitich [7]3 years ago
6 0
100 puzzles were sold
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please help :{ brainliest if you can get it right and I need you to prove why your answer is correct, thanksss​
beks73 [17]

Answer:

The Value of a=\frac{15}{4}.

Step-by-step explanation:

We have Named the figure please find the attachment for your reference.

Given:

PR = y

QR = a

RS = b

PS = z

PQ = x

QS = 15

∠P = 90°

∠R = 90°

∠Q = 60°

∠S = 30°

We need to find the Value of 'a'.

Solution:

Now we know that:

In Δ PQS

∠P = 90°

∠S = 30°

Now we know that;

sin\ \theta = \frac{opposite\ side}{Hypotenuse}

sin \ S= \frac{PQ}{QS}

Substituting the given values we get;

sin\ 30\°=\frac{x}{15}

Now we know that;

sin\ 30\° = \frac12

So we can say that;

\frac{1}{2}=\frac{x}{15}\\\\x=\frac{15}{2}

Now In Triangle PQR.

∠R = 90°

∠Q = 60°

So we can say that;

Cos \theta = \frac{adjacent \ Side}{Hypotenuse}\\

Cos\ Q = \frac{QR}{PQ}

Substituting the given values we get;

cos 60\°= \frac{a}{x}

Now we know that;

cos 60\°= \frac12

x=\frac{15}{2}

So substituting the values we get;

\frac{1}{2}=\frac{a}{\frac{15}{2}}

By Using Cross Multiplication we get;

a= \frac{1}{2}\times\frac{15}{2}\\\\a=\frac{15}{4}

Hence The Value of a=\frac{15}{4}.

6 0
3 years ago
What's 675890 in word form
Artist 52 [7]
<span>675890 is spelled six hundred and seventy-five thousand, eight hundred and ninety </span>
8 0
3 years ago
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Mrs. Baxter deposits $2000 in an account that earns 5% interest. How much is Mrs. Baxter's investment worth after 8 years
Trava [24]

Answer:

2954.91088758

Step-by-step explanation:

exact answer

6 0
2 years ago
PLEASE HELP<br> FIND THE VOLUME OF EACH FIGURE <br> ROUND TO THE NEAREST TENTH! <br><br> Thank you
swat32

Answer:

Sphere=2144.6

Cylinder=1693.3

Cone=2093.3

Step-by-step explanation:

6 0
3 years ago
Which equations are equivalent to -1/4(x)+3/4=12? Select all that apply.
ELEN [110]

Answer:

B and E

Step-by-step explanation:

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