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3 years ago

Please help me with these 2 answers!

Mathematics

2 answers:

fgiga [73]3 years ago

4 0

7 is 71+7/3+78
8 is 60x2x2

snow_lady [41]3 years ago

3 0

Answer:

Answer 1: b. $104

Answer 2: b. $240

Step-by-step explanation:

Answer 1 explanation : Because he ended up with $71.00, the is no way he earned $64 or $13. He spent $7 on snacks, which means he would have had $78 then. But, he spent 1/4 of his money on the movie (not the snacks) so that means he would have more than $78 dollars to start with.

Answer 2 explanation: Because Jani spent half of her money on her bicycle, then and another half on a stereo set. That means she spent 1/4 of her money. Multiply 60 x 4, then you'll get 240.

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If the vertex of a parabola is (0, 3), what is the axis of symmetry

GREYUIT [131]

Answer:

The equation of the axis of symmetry for this parabola is x = 0.

Step-by-step explanation:

For parabola's, it's axis of symmetry always goes through the vertex of the parabola. In other words, the axis of symmetry is vertical line that goes through the x-coordinate of the vertex.

Now, the vertex is given as (0,3) which is at x = 0, y = 3.

Thus, the vertical line that goes through the x-coordinate of the vertex will be x = 0

Thus, the equation of the axis of symmetry for this parabola is x = 0.

7 0

3 years ago

Help, I need help plz. Like NOW!!

LenaWriter [7]

Answer:

2nd one

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

5-2.1=? 5-2.17=? 5-2 7/8 solve make sure to re-check your self before answering or no forty points

frozen [14]

Answer: 5-2.1= 2.9

5-2.17= 2.83

5-2 7/8= 2.125

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3 years ago

Factor completely 5a2 + b. Prime a(5a + b) b(5a2) ab(5a + 1)

Tatiana [17]

$\sf {5a^2+b~is~\boxed{\bf{prime}}}$

It is prime because it has no common factors in 5a^2 and b.

The answer is A.

6 0

3 years ago

Read 2 more answers

Please help! I don't really understand this.

ch4aika [34]

Step-by-step explanation:

11.

Area of rectangle = 408 in²

Length = 3x-2 and width = x

The area of a rectangle is given by :

A = lb

(3x-2)x = 408

x = 12 inch and x = -11.33 in

Neglecting negative value,

The width of rectangle = 12 inch

The length of rectangle = 3x-2 = 3(12)-2 = 34 inch

12.

Base of triangle = 2x+2

Height = x

The area of a triangle is given by :

$A=\dfrac{1}{2}bh\\\\600=\dfrac{1}{2}\times (2x+2)x\\\\600=(x+1)x$

x = 24 cm and x = -25 cm

Neglecting negative value, x = 24 cm

Base = 2x+2 = 2(24)+2 = 50 cm

Hence, this is the required solution.

8 0

3 years ago