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Nat2105 [25]
3 years ago
12

Using the x,y format where does the graph of 3x+3 and -5×+7 intersect

Mathematics
2 answers:
IRINA_888 [86]3 years ago
8 0
Not sure if I'm right but I believe they intersect at (1,4).
denis-greek [22]3 years ago
5 0
Assuming they equal y

y=3x+3
y=-5x+7
set eqal to each other since both equal y
3x+3=-5x+7
add 5x both sides
8x+3=7
minus 3 both sides
8x=4
divide by 8 both sides
x=1/2
sub back

3x+3=y
3(1/2)+3=y
1.5+3=y
4.5=y
9/2=y

x=1/2
y=9/2
(1/2,9/2) is soltuion
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1/4 + 1/2 + x = - 3/4 what is x equal to
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Answer:

-6/4 or -1 1/2

8 0
3 years ago
Which equation can be used to represent "six added to twice the sum of a number and four is equal to half the difference of thre
forsale [732]
2(n+4) + 6 = (1/2)(3-n)

Then 2n + 8 + 6 = 3/2 - n/2
and    2n + 14 = 3/2 - n/2

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          -25/2
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6 0
3 years ago
The function f(x) = 7(1.32)x models the number, in billions, of the DNA sequences in a database x years since 2010. What does th
NikAS [45]

Answer:

The correct option is (A).

Step-by-step explanation:

The function representing the growth of number, in billions, of the DNA sequences in a database x years since 2010 is:

f(x)=7\cdot (1.32) x

The general growth function can be represented as:

y=a\cdot (1+r)^{t}

Here,

<em>y</em> = final value

<em>a</em> = initial value

<em>r</em> = growth rate

<em>t</em> = time

Com-paring the two functions we get:

1+r=1.32\\r=1.32-1\\r=0.32

This implies that the annual increase rate in number, in billions, of the DNA sequences is 32%.

Thus, the correct option is (A).

7 0
3 years ago
Yousef is making cookies for a friend's birthday. The recipe only makes one dozen cookies, and he wants to take 4 dozen to the b
FinnZ [79.3K]

Answer:

6 and 2/3

Step-by-step explanation:

you do 1 2/3 x 4 because that is the amount of flour you need to make one batch. That is the correct answer.

6 0
3 years ago
A dealer mixes 120 liters of milk containing 5% water with 80 liters of milk containing 10 % water. the percentage of water in t
timurjin [86]

9514 1404 393

Answer:

  7%

Step-by-step explanation:

Let x represent the percentage of water in the mix. The amount of water in the mix is ...

  5%·120 +10%·80 = x·(120 +80)

  14/200 = x = 7% . . . . . . . . . . . . . . simplify, divide by 200

The percentage of water in the mixture is 7%.

7 0
3 years ago
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