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4 years ago

Which of these products is positive?

Mathematics

1 answer:

Travka [436]4 years ago

4 0

Answer:

3.2, 12.5

Step-by-step explanation:

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What is the answer for 23x9+(91+7)

mestny [16]

Answer:

305

Step-by-step explanation:

23×9+98

207+98

305

3 0

3 years ago

Read 2 more answers

Evalute costheta if sintheta = (sqrt5)/3

torisob [31]

Answer:

$\large\boxed{\cos\theta=\pm\dfrac{2}{3}}$

Step-by-step explanation:

Use $\sin^2x+\cos^2x=1$ .

We have

$\sin\theta=\dfrac{\sqrt5}{3}$

Substitute:

$\left(\dfrac{\sqrt5}{3}\right)^2+\cos^2\theta=1\qquad\text{use}\ \left(\dfrac{a}{b}\right)^n=\dfrac{a^n}{b^n}\\\\\dfrac{(\sqrt5)^2}{3^2}+\cos^2\theta=1\qquad\text{use}\ (\sqrt{a})^2=a\\\\\dfrac{5}{9}+\cos^2\theta=1\qquad\text{subtract}\ \dfrac{5}{9}\ \text{from both sides}\\\\\cos^2\theta=\dfrac{9}{9}-\dfrac{5}{9}\\\\\cos^2\theta=\dfrac{4}{9}\to \cos\theta=\pm\sqrt{\dfrac{4}{9}}\\\\\cos\theta=\pm\dfrac{\sqrt4}{\sqrt9}\\\\\cos\theta=\pm\dfrac{2}{3}$

3 0

4 years ago

Read 2 more answers

NEED ANSWERS CORRECT ONES NEED NOW WILL MARK BRAINLIEST...

nadya68 [22]

(a) There are 1/4 cups of flour per serving

Work: 1.5/6=1/4

(b) There are aprox. .18 cups of sugar per serving.

Work: 9/12+4/12=13/12 n then divide 13/12 by 6

(c) You need 2 1/4 cups of flour to make 9 servings

Work: 1.5/2=.75 1.5+.75=2.25=2 1/4 cups

(d) Someone would need to know the amount of sugar per serving to make the recipe accurate.

Question 2

(a) You're account is at $10 dollars

Work: $5x5 (days)=$25. add 25 to -15 and you have $10 dollars in you're account.

(b) 5 days.

Work: 10/2=5 10-10=$0

6 0

3 years ago

Tyler wears a jacket to school every 3rd day and a scarf to school every 8th day. What will be the first day Tyler will wear his

disa [49]

Answer:

24th day will be the first day on which Tyler will wear his jackets and scarf to school

Step-by-step explanation:

We can find the first day on which the Tyler will wear his jackets and scarf to school by taking the LCM of(3,8)

Finding the LCM of(3,8)

List all prime factors for each number.

Prime Factorisation of 3 shows:

3 is prime => $3^1$

Prime Factorisation of 8 is:

2 x 2 x 2 => $2^3$

For each prime factor, find where it occurs most often as a factor and write it that many times in a new list.

The new super-set list is

2, 2, 2, 3

Multiply these factors together to find the LCM.

LCM = 2 x 2 x 2 x 3 = 24

6 0

3 years ago

According to the annual summer vacation survey conducted by myvesta, a non profit consumer education organization the average su

katrin2010 [14]

Answer:

credit card percentage = 77.70 %

Step-by-step explanation:

Given as ,

The vacation cost = $ 2252

Amount charged on credit card = $ 1750

so , the percentage credit card charged on vacation cost = $\frac{1750}{2250} times 100$

Hence % credit card cost = 77.70 % Answer

3 0

3 years ago