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3 years ago

While in the store, your father purchases drinks for the six people in your van. Part of your

Mathematics

1 answer:

lianna [129]3 years ago

7 0

Answer: (2,4) They bought 2 sodas and 4 coffees.

Step-by-step explanation:

A. c + s=6 where c is the number of coffee and s is the number of sodas

B. 1.50c + 1.20s =8.40

C. -1.50 (c + s) =6(-1.50) we will multiply the first equation by -1.50 to eliminate the c

New equation; -1.50 - 1.50s = -9 -0.3s/-0.3=-0.6/-0.3 s=2

-150 + 1.20s = 8.40

So we know they bought 2 sodas. so we will plot 2 into the equation.

1.50c + 1.20(2)=8.40 c= 4

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On a grocery store shelf, there are 16 loaves of white bread and 24 loaves of wheat bread. A shopper randomly selects a loaf of

Oksanka [162]

Answer:

60%

Step-by-step explanation:

16 loaves of white bread and 24 loaves of wheat bread. = 40 loaves of bread

P( wheat) = number of wheat/ total

= 24/40

=.6

=60%

4 0

3 years ago

A right-angled triangle has shorter side lengths exactly c^2-b^2 and 2bc units respectively, where b and c are positive real num

yKpoI14uk [10]

Answer: hypotenuse = $c^{2} + b^{2}$

Step-by-step explanation: Pythagorean theorem states that square of hypotenuse (h) equals the sum of squares of each side ( $s_{1},s_{2}$ ) of the right triangle, .i.e.:

$h^{2} = s_{1}^{2} + s_{2}^{2}$

In this question:

$s_{1}$ = $c^{2}-b^{2}$

$s_{2} =$ 2bc

Substituing and taking square root to find hypotenuse:

$h=\sqrt{(c^{2}-b^{2})^{2}+(2bc)^{2}}$

Calculating:

$h=\sqrt{c^{4}+b^{4}-2b^{2}c^{2}+(4b^{2}c^{2})}$

$h=\sqrt{c^{4}+b^{4}+2b^{2}c^{2}}$

$c^{4}+b^{4}+2b^{2}c^{2}$ = $(c^{2}+b^{2})^{2}$ , then:

$h=\sqrt{(c^{2}+b^{2})^{2}}$

$h=(c^{2}+b^{2})$

Hypotenuse for the right-angled triangle is $h=(c^{2}+b^{2})$ units

3 0

3 years ago

Doug says that this clock shows 8:43.is he correct? Explain why or why not.

ss7ja [257]

Is this a joke because it made me laugh

5 0

3 years ago

Read 2 more answers

320 is decreased to 304

jeka57 [31]

Simple..

320-304
= 116

Your answer is 116

Happy Studying ^=^

8 0

3 years ago

Glen invested 22000 at 7% interest compound annually. how much interest will glen earn in 3 years

Rama09 [41]

A = P(1+r/n)<span>(nt)
A = 22000(1+0.07/1)^(1*3)
A = 26,950.95

</span>26,950.95 - 22000 = 4950.95

answer: Glen earns $4,950.95 interest in 3 years

3 0

3 years ago