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Sati [7]
2 years ago
10

PLEASE HELP— URGENT// MIDDLE SCHOOL MATHEMATICS

Mathematics
2 answers:
MaRussiya [10]2 years ago
4 0

Answer:

Step-by-step explanation:

The new bike costs 180 dollars

Parents paid 40%

what is a percentage? per cent= divide by 100

parents paid 180 *40/100=180*0.4=72 dollars

Jennifer has to pay the rest

180-72=108

tekilochka [14]2 years ago
3 0

Answer:

$108

Step-by-step explanation:

You want to start by finding 40% of 180. When something says "of", you multiply! To make 40% in the correct format, move the decimal over to the right by two spaces, which leaves you with .40. As I said "of" means multiply, so you do .40 x 180, which = $72. This is the amount her parents paid, so you much subtract this from the total amount to find out what Jennifer paid. You do 180-72=$108. Jennifer paid $108!

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Solve for x: 4(x + 2) = 3(x − 2)<br><br>A) −2<br>B)−4<br>C) −10<br>D) −14
BARSIC [14]

4(x+2)=3(x-2)

Multiply the first bracket by 4

Multiply the second bracket by 3

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Move 3x to the left hand side, whenever moving a number with a letter the sign changes ( positive 3x to negative 3x)

4x-3x+8=3x-3x-6

x+8=-6

Move positive 8 to the right hand side

x+8-8=-6-8

x=-14

Check answer by using substitution method

Use x=-14 into both of the equations

4(-14+2)=3(-14-2)

-56+8=-42-6

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Answer is -14- D)

6 0
3 years ago
What is the measure of angle XYZ?
Ierofanga [76]

Answer:

63degrees

Step-by-step explanation:

Using the theorem which states that the measure of angle at the vertex is half the angle of its intercepted arc.

Given

angle of its intercepted arc = 126 degree

Required

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According to the theorem;

x = 1/2(126)

x = 126/2

x = 63

Hence the measure of <XYZ is 63degrees

6 0
3 years ago
What is the component form of the vector represented by 2a when a⃗ =〈−2,3〉?
Paladinen [302]

Answer:

\vec v = 2\cdot \vec a = \langle -4,6 \rangle

Step-by-step explanation:

Let \vec a = \langle -2, 3 \rangle, we need to determine \vec v = 2\cdot \vec a, which can be found by applying the following property:

\alpha \cdot \langle x,y \rangle = \langle \alpha \cdot x, \alpha \cdot y\rangle, \forall \,\alpha,x,y\in \mathbb{R} (1)

Then,

\vec v = 2\cdot \langle -2,3 \rangle

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8 0
2 years ago
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erica [24]

Answer:

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=31/2{16+(30×4)

=31/2(16+120)

=31/2×126

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Step-by-step explanation:

Similarly use 19 as (n) for the 19th term

7 0
2 years ago
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7 0
3 years ago
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