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2 years ago

Pls solve this. this is of set class 9.

Mathematics

1 answer:

Novay_Z [31]2 years ago

8 0

Here is the answer :

people who like both the songs is 35 and

people who like only folk songs is 100.

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Joe is 10 years older than James and eight years twice Joe’s age will equal three times James eight how old is Joe now.

Lady_Fox [76]

Let James be x years old
Joe = 10 + x
After 8 years
18 + x = 3(x)
18 + x = 3x
18 = 2x
x = 9

Joe is 19
James is 9

6 0

3 years ago

Find the value of x in the isosceles triangle shown below

Vesnalui [34]

Answer:

the value of x is 8

x=8

HOPE IT'S HELP

6 0

3 years ago

Leo has $4.80 in dimes a d quarters he has 6 more dimes than quarters how many quarters does he have

Kryger [21]

Answer:

Step-by-step explanation:

he has 4.80 in dimes and quarters....dimes (d) are worth 0.10 and quarters (q) are worth 0.25

0.10d + 0.25q = 4.80

he has 6 more dimes then quarters

d = q + 6

====================

d = q + 6...so we sub q + 6 in for d, back into the other equation

0.10(q + 6) + 0.25q = 4.80

0.10q + 0.60 + 0.25q = 4.80

0.35q = 4.80 - 0.60

0.35q = 4.20

q = 4.20 / 0.35

q = 12 <====== there is 12 quarters

d = q + 6

d = 12 + 6

d = 18 <===== there is 18 dimes

6 0

3 years ago

Read 2 more answers

3. Suppose you are testing H0 : µ = 20 vs H1 : µ > 20. The sample is large (n = 71) and the variance, σ 2 , is known. (a) Fin

LUCKY_DIMON [66]

Answer:

We reject the null hypothesis.

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 71

Population variance is known.

Level of significance, α = 0.08

$z_{\text{stat}} = 1.56$

The null and alternate hypothesis are:

$H_{0}: \mu = 20\\H_A: \mu > 20$

We use one-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} } = 1.56$

Now, $z_{critical} \text{ at 0.08 level of significance } = 1.41$

Since,

$z_{stat} > z_{critical}$

We fail to accept the null hypothesis and reject it and accept the alternate hypothesis.

7 0

3 years ago

Write the product as a mixed number. 3 x 3 3/4=

Dafna1 [17]

The answer is 45/4 or 11 1/4

6 0

3 years ago