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3 years ago

10

I need help I don’t get this

1 answer:

Arlecino [84]3 years ago

8 0

1
Mauricio's mother gave him $5 to spend at the concession stand to buy fruit for himself and
his friends. Oranges cost $0.75 each, and apples cost $0.50 each. What are the solutions to the
inequality that represents the number of oranges and apples Mauricio can buy if x represents
the number of oranges and y represents the number of apples?

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(x + 5)(x – 5)<br> Multiply

Vsevolod [243]

Answer:

${x}^{2} - 25$

Step-by-step explanation:

$(x + 5)(x – 5) \\ \\ = {(x)}^{2} - {(5)}^{2} \\ \\ = {x}^{2} - 25$

8 0

3 years ago

Read 2 more answers

Find the following expression

kondaur [170]

Answer:

40/30

Step-by-step explanation:

$\tan(c) = \frac{40}{30} = \frac{4}{3}$

5 0

3 years ago

I need help with this problem... can someone help me ASAP please

Murrr4er [49]

Answer:

C. -2

Step-by-step explanation:

The slopes of parallel lines are always the same.

6 0

3 years ago

To determine drug dosages, doctors estimate a person’s body surface area (BSA) (in meters squared) using the formula BSA = √ h m

krok68 [10]

Answer:

Step-by-step explanation:

Given that a person’s body surface area (BSA) (in meters squared) using the formula

$BSA =\frac{\sqrt{hm} }{60}$

We are to calculate the rate of change of BSA with respect to mass for a person of constant height h = 180 from m =70 to m =80

For this we calculate BSA for 80 kg and BSA for 70 kg first

Rate of change = $BSA(80)-BSA(70)$

= $\frac{\sqrt{180*80} }{60} -\frac{\sqrt{180*70} }{60} \\=2-1.871\\=0.129$

i.e. rate of change per 10 kg is 0.129

No BSA does not increase more rapidly

7 0

4 years ago

The coordinates of the vertices of □PQR are (-2,5), Q(-1,), and R(7,3). Determine whether □ PQR is a right triangle. Show Your W

alexdok [17]

Answer:

Slope of PQ

m

r

=

y

Q

−

y

P

x

Q

−

x

P

=

1

−

5

−

1

−

(

−

2

)

=

−

4

Slope of QR

m

p

=

y

R

−

y

Q

x

R

−

x

Q

=

3

−

1

7

−

(

−

1

)

=

1

4

Slope of RP

m

q

=

y

R

−

y

P

x

R

−

x

P

=

3

−

5

7

−

5

=

−

1

Since slopes PQ & PR,

m

r

=

−

1

m

p

, it's a right triangle

4 0

3 years ago