All categories

1 year ago

An investor bought 3 shares of stock A and 2 shares of stock B for a total of

Mathematics

1 answer:

irga5000 [103]1 year ago

8 0

Step-by-step explanation:

3a+2b=41

(3a+$2)+2b=41

3(7+2)=41-2(7)

3×9=41-14

27=27

a=9

b=7

You might be interested in

Scientist A dissolved 1.0 kilogram of salt in 3.0 liters of water. Scientist B dissolved 20 pounds of salt in 7.0 pints of water

Lilit [14]

scientist A dissolved 1 kg of salt in 3 litres.

scientist B dissolved 20 pounds of slat in 7 pint of water.

we know that 1 pound =0.543 g

20 pounds=9.07 kg.

1 pint=0.5 litres

so 7 pints =3.5 litres

so dissoving 1 kg of salt in 3 litres of water and 9.07 kg in 3.5 litres of water

we know that for concentration kg/l units is used .

for A= 1/3=0.33kg/l

and B=9.07/3.5=2.59 kg/l.

so scientist A has prepared more concentrated solution .

3 0

2 years ago

Read 2 more answers

Rationalise the denominator

Margaret [11]

Step-by-step explanation:

1. $\frac{2 \sqrt{3} }{ \sqrt{5} }$

multiply

$\sqrt{5}$

do both the numerator and denominater

$\frac{2 \sqrt{3} }{ \sqrt{5} } \times \frac{ \sqrt{5} }{ \sqrt{5} } = \frac{2 \sqrt{15} }{ \sqrt{25} } = \frac{2 \sqrt{15} }{5}$

8 0

2 years ago

What is 30 + 1/8 as a mixed number

Usimov [2.4K]

If you mean as a decimal, it's 30.125.

3 0

2 years ago

Many consumer groups feel that the U.S. Food and Drug Administration (FDA) drug approval process is too easy and, as a result, t

Zigmanuir [339]

Answer:

If we reject the null hypothesis based on the evidence, then our conclusion should be Option c.

If we do not reject the null hypothesis based on the evidence, then our conclusion should be Option a.

Step-by-step explanation:

We are given that the FDA wants to set up a hypothesis test to show that the new drug is safe before approving it by assuming it to be unsafe.

So, Null hypothesis, $H_0$ = New drug is unsafe

Alternate Hypothesis, $H_1$ = New drug is safe

Now, if we reject the null hypothesis based on the evidence, then our conclusion should be that :

There is sufficient evidence to believe that the new drug is safe because rejecting null hypothesis means that alternate hypothesis is accepted with required evidence.

And If we do not reject the null hypothesis based on the evidence, then our conclusion should be that :

There is insufficient evidence to believe that the new drug is safe because not rejecting null hypothesis means that we are not ready with enough evidence to assume that new drug is safe.

5 0

2 years ago

What is #14??? Plz show work

ivanzaharov [21]

I can burly read that but the fraction should be right

6 0

2 years ago