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2 years ago

Paul bought 18 pins for $90. Jack bought 45 pins for $180. Who bought pins at the lowest cost?

Mathematics

2 answers:

Marizza181 [45]2 years ago

4 0

Answer:

Jack bought pins for the lowest price

Step-by-step explanation:

90/18= 5$ per pin

180/45= 4$ per pin

lina2011 [118]2 years ago

3 0

Answer:

Jack

Step-by-step explanation:

90/18 = 5

180/45 = 4

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Answer:

Select all the expressions that equal -2 + 5.

-2 - (-5)

-2 - 5

5 - 2

5 + (-2)

Step-by-step explanation:

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3 years ago

In ΔXYZ, ∠Y=90° and ∠X=73°. ∠ZWY=80° and XW=80. Find the length of ZY to the nearest 100th.

lawyer [7]

Answer:

Solution given:

Y=90°

∠X=73°.

∠ZWY=80°

and XW=80.

ZY=?

We know that

In right angled triangle ∆ XYZ

Tan 73= $\frac{p}{h}$

3.27= $\frac{yz}{xy}$

3.27×[xy]=yz

xw+wy= $\frac{yz}{3.27}$

wy= $\frac{yz}{3.27}$ -80...........(1)

again

In right angled triangle WYZ

Tan 80= $\frac{yz}{wy}$

5.67×wy=yz

wy= $\frac{yz}{5.67}$

yz=5.67×wy............................................(2)

Equating equation 1&2

$\frac{yz}{5.67}$ = $\frac{yz}{3.27}$ -80

$\frac{yz}{3.27}$ - $\frac{yz}{5.67}$ =80

5.67yz-3.27yz=80*5.67*3.27

2.4yz =1483.272

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3 years ago

Solve the following: a) 4x-3 = 2x + 7 b) 2x+6=7x14

Igoryamba

$\huge \qquad \qquad \sf \underline{Answer}$

$\textbf {Let's Solve :}$

<h3>Question 1 :</h3>

$\textsf{4x - 3 = 2x +7}$

$\textsf{4x -2x = 3 +7}$

$\textsf{2x = 10}$

$\textsf{x=5}$

<h3>Question 2 :</h3>

$\sf{2x + 6 = 7 \times 14}$

$\sf{2x + 6 = 98}$

$\sf{2x = 98-6}$

$\sf{2x = 92}$

$\sf{x=46}$

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2 years ago

What is the recursive formula for the sequence? 8, 6, 4, 2, 0, . . .

e-lub [12.9K]

Step-by-step explanation:

Here 6 - 8 = 4 - 6 = 2 - 4 = 0 - 2 = - 2

Thus, the common difference between any two consecutive term is - 2.

The recursive formula is given as:

$f(1)=a_1 = 8\\\\f(2)=a_2 = a_1 - 2\\\\f(3)=a_3 = a_2 - 2\\\\f(4)=a_4 = a_3 - 2\\\\f(5)=a_5 = a_4 - 2\\\\\therefore f(n) = a_n=a_{n-1}-2 \\$

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3 years ago

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vladimir2022 [97]

Answer:

The equation of the axis of symmetry is x = 7

Step-by-step explanation:

Mathematically, we have the equation of the axis of symmetry as;

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So the equation of the axis of symmetry is x =7

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