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3 years ago

karla borrowed $5 each from 4 different friends. How much money does karla owe her friends altogether

Mathematics

1 answer:

lys-0071 [83]3 years ago

7 0

Answer:

$20.

Step-by-step explanation:

If she owes 4 people 5 dollars each, you multiply 5 and 4 to get the full amount of money altogether. In this case, the equation is

5*4=20

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Y-2=-4(x-1) in standard form

GalinKa [24]

Answer:

4x+y=6

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

michael wittry has been investing inhis roth IRA retirement account for 20 years. Two years ago his account was worth $215,658.

Over [174]

Let's say

a = 215,658

ok... so.. he first lost 1/3 of that

$\bf \textit{\underline{lost} }\frac{1}{3}a\qquad \qquad a-\cfrac{1}{3}a\implies a-\cfrac{a}{3}\implies \cfrac{3a-a}{3}\implies \cfrac{2a}{3}
\\\\\\
\textit{then he \underline{gained} }\frac{1}{2}\textit{ of }\frac{2a}{3}\qquad \qquad \cfrac{2a}{3}+\cfrac{\frac{2a}{3}}{2}\implies \cfrac{\frac{2a}{3}}{\frac{2}{1}}
\\\\\\
\cfrac{2a}{3}+\cfrac{2a}{3}\cdot \cfrac{1}{2}\implies \cfrac{2a}{3}+\cfrac{2a}{6}\implies \cfrac{4a+2a}{6}
\\\\\\
\cfrac{6a}{6}\implies \boxed{a}\implies 215,658$

so, his nickname might just be even steven, because, he ended up with the same original amount after the 1/2 bump.

4 0

4 years ago

Write true or false for each of these. Show your working.

SpyIntel [72]

Step-by-step explanation:

A) 4(3) + 2 = 14

True

B 3(5) - 8 = 7

False

C 2 - 10 = - 8

False

D 6 - 2(7) = 6 - 14 = - 8

True

3 0

4 years ago

Please help, seriously confused

Rufina [12.5K]

Original height = original width = x mm

1. She made an enlarged copy...
height = 2x
width = 2x

2. She cut off a rectangle...
height = 2x
width = $\frac{2}{3} *2x= \frac{4}{3}x$

3.She doubled the width...
height = 2x
width = $2*\frac{4}{3}x = \frac{8}{3}x$

height * width = area

$2x * \frac{8}{3}x=139 \ 968 \\ \\ \frac{16}{3}x^2= 139 \ 968 \\\\ x^2=139 \ 968: \frac{16}{3}=139 \ 968 * \frac{3}{16}= 8 \ 748*3 = 26 \ 244 \\ \\ x= \sqrt{26 \ 244} = 162 \ mm$

Original height was 162 mm

6 0

4 years ago

Please help me with this

postnew [5]

Answer:

Step-by-step explanation:

The conclusion of this proof derives from CPCTC and the SAS congruence postulate. In order for SAS to apply, corresponding sides and the angle between them must be shown to be congruent. The congruence statement ...

ΔABC ≅ ΔDCB

tells you these pairs of sides and angles are congruent:

AB ≅ DC . . . . statement 2
∠ABC ≅ ∠DCB . . . . statement 4
BC ≅ CB . . . . (missing statement 5)
AC ≅ DB . . . . statement 7

That is, the statement needed to complete the proof is a statement that segment BC is congruent to itself. That congruence is a result of the reflexive property of congruence.

4 0

2 years ago