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3 years ago

Please help me i gotta get this finished... :P

Mathematics

1 answer:

Llana [10]3 years ago

5 0

Answer:

A) it depends. If they bought 10 calculators, we would multiply 31.25 by 10. 31.25x10=$312.50

B)Divide 500 by 31.25. Since each calculator is $31.25, we divide $500 by it to see how many they can buy with $500. 500/31.25=16

Step-by-step explanation:

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Marco needs to buy some dog food. At the nearest store, 3 bags of dog food cost $13.50. How much

Ilya [14]

Answer:

$22.50

Step-by-step explanation:

$4.50x5=$22.50

8 0

3 years ago

Find the vertices and foci of the hyperbola with equation (x-5)^2/81 -(y-1)^2/144 = 1

vesna_86 [32]

Given the equation of an hyperbola in the form:
$\frac{(x-a)^2}{b^2}- \frac{(y-c)^2}{d^2}=1$
Then the focus of the hyperbola is $(\pm\sqrt {b^2+d^2},0)$
Compute like this:
$\sqrt{81+144}=15$
So the two focus points are $(\pm15,0)$
The vertices are given by the formula: $(\pm a,0)$
We deduce the two vertices of the given hyperbola: $(\pm9,0)$
since $\sqrt{81}=9$

4 0

3 years ago

Read 2 more answers

3 times the sum of and number and -23=28

kvasek [131]

Answer:

3x - 23 = 28

Step-by-step explanation:

7 0

3 years ago

Solve quickly please.

lys-0071 [83]

Find the change between the first two sets:

12-9 = 3

14.4 - 10.8 = 3.6

3.6/3 = 1.2

Now find the change between the last two sets:

12 - -3 = 15

14.4 - 3.6 = 10.8

10.8/15 = 0.72

1.2 does not equal 0.72 so the answer is No

4 0

3 years ago

A hiker is walking through a flat meadow, observing a mountain in

melomori [17]

Answer:

Un excursionista camina por un prado llano, observando una montaña a

lo lejos. Mide que el ángulo de elevación entre el suelo

y la cima de la montaña es de 25 grados. Camina 5 millas y luego

mide el ángulo de elevación nuevamente, ahora es de 40 grados. ¿Qué altura tiene

la montaña?

Step-by-step explanation:

5 0

3 years ago