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Lemur [1.5K]
3 years ago
9

I need help with this!!

Mathematics
1 answer:
Tpy6a [65]3 years ago
8 0

Answer:

12

Step-by-step explanation:

So Josh is 6 years older than kims age and the sum of the ages is less than 31, the greatest number that is less than 31 is 30 so we can use that.

We can make an equation out of this and solve it.

n+(n+6)=30

2n+6=30

2n=24

n=12

12 is the oldest Kim could be.

12+(12+6)=12+18=30.

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JulsSmile [24]

Answer:

\textbf{$x \in (-\infty, 3] $}\\

Step-by-step explanation:

\textup{Given:}\\$ 4x + 6 $\textup{Subtracting $6$ from both the sides }\\$ 4x \leq 18 - 6 \hspace{5mm} (=12) $\\\textup{Dividing by $4$ on both the sides: \hspace{15mm} [Note that the sign of the inequality changes only when we divide it by a negative number]}\\$$ x \leq 3 $$\\\textup{$x$ can be any real number less than or equal to 3.}\\$ \iff x \in R^- \cup \{a : 0 \leq a \leq 3\} $

7 0
4 years ago
Hey! Can you plz help me? I promise to give brainliest
aleksandr82 [10.1K]

Answer: answer D

Step-by-step explanation:

i am pretty sure it is D. not 100%, but like 90%. they are both on the outside of the lines, so that is why i know they are exterior. and, they are on opposite sides, so that makes them alternate.

8 0
3 years ago
What I 0.00005164 written as a single digit times a power of ten
Savatey [412]

Answer:

5.164×10^-5

Step-by-step explanation:

5.164 \times  {10}^{ - 5}

5 0
3 years ago
Derek wants to order some roses online. Florist A charges $4.75 per blue
MArishka [77]

Step-by-step explanation:

let the total charge be y

and the number of rose be x

Florist A charges

y=40+4.75x---------1

Florist B charges

y=25+5.2x--------2

to solve for the number of roses we need to equate 1 and 2

40+4.75x=25+5.2x

40-25=5.2x-4.75x

15=0.45x

x=15/0.45

x=33.33

The number of roses that will be less expensive to order from A is 33.33

5 0
3 years ago
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Aleksandr [31]
Percents are out of 100, so 20% is the same thing as 20/100 or 0.2 as a decimal. To find how much he saves from the coupon, multiply the cost of the markers by 0.2.

2.85 * 0.2 = 0.57

The answer is $0.57
7 0
3 years ago
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