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3 years ago

Am I right or wrong??

Mathematics

1 answer:

Slav-nsk [51]3 years ago

8 0

Answer:

i think thats correct

Step-by-step explanation:

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Pls help will give the crown of correct

tangare [24]

Answer:

a) The watch is cheaper in Geneva.

b) The watch is cheaper by £20

Step-by-step explanation:

a) In which city is the watch cheaper?

Step 1. Translate Pounds into Swiss Francs.

£145 * 1.55 = 224.75 CHF

Step 2. Determine which price is higher.

224.75 is greater than 193.75.

Step 3. Always answer a Word problem in complete sentences.

The watch is cheaper in Geneva.

b) By how much is it cheaper?

224.75 - 193.75 = 31

Translate CHF to Pounds.

31 / 1.55 = 20

The watch is cheaper by £20.

3 0

3 years ago

Two factors of 24 add up to 11 what are they

allsm [11]

$x*y=24$
$x+y=11$
$y=24/x$
$y=11-x$
$24/x=11-x$
$11x-x^{2} =24$
$- x^{2} +11x-24=0$
$(-x+8)(x-3)=0$
$-x+8=0 x-3=0$
$x=8 or 3$
Your factors are 8 and 3.

7 0

4 years ago

A company claims that less than 10% of adults own a smart watch. You want to test this claim, and you find that in a random samp

Nezavi [6.7K]

Answer:

Test statistic is 0.67

Critical value is -2.33

Step-by-step explanation:

Consider the provided information.

The formula for testing a proportion is based on the z statistic.

$z=\frac{\hat p-p_0}{\sqrt{p_0\frac{1-p_0}{n}}}$

Were $\hat p$ is sample proportion.

$p_0$ hypothesized proportion and n is the smaple space,

Random sample of 100 adults, 12% say that they own a smart watch.

A company claims that less than 10% of adults own a smart watch.

Therefore, n = 100 $\hat p$ = 0.12 , $P_0$ = 0.10

$1 - P_0 = 1 - 0.10 = 0.90$

Substitute the respective values in the above formula.

$z=\frac{0.12-0.10}{\sqrt{0.10\frac{0.90}{100}}}$

$z\approx 0.67$

Hence, test statistic = 0.67

This is the left tailed test.

Now using the table the P value is:

P(z < 0.667) = 0.7476

P-value = 0.7476

$\alpha = 0.01$

Here, P-value > α therefore, we are fail to reject the null hypothesis.

$Z_{\alpha}= Z_{0.01} = -2.33$

Hence, Critical value is -2.33

7 0

3 years ago

If a car is going 150 miles per hour then how many meters per second is it traveling at?

LenKa [72]

around 67.046 meters. hope it helps :)

7 0

3 years ago

PLEASE PLEASE HELP!! Sketch a triangle and label correctly. Work must be shown for this problem. Round answers to the nearest hu

torisob [31]

Answer:

Please see attached image for the sketch with the labels.

Length "x" of the ramp = 11.70 ft

Step-by-step explanation:

Notice that the geometry to represent the ramp is a right angle triangle, for which we know one of its acute angles ( $20^o$ ), and the size of the side opposite to it (4 ft). Our unknown is the hypotenuse "x" of this right angle triangle, which is the actual ramp length we need to find.

For this, we use the the "sin" function of an angle in the triangle, which is defined as the quotient between the side opposite to the angle, divided by the hypotenuse, and then solve for the unknown "x" in the equation:

$sin(20^o)=\frac{opposite}{hypotenuse}\\ sin(20^o)=\frac{4}{x} \\x=\frac{4}{sin(20^o)} \\x=11.695\,\,ft$

Therefore the length of the ramp rounded to the nearest hundredth as requested is: 11.70 ft

5 0

3 years ago

Am I right or wrong?? ​

Am I right or wrong??