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crimeas [40]
3 years ago
9

What is the solution of the equation? Square root 2x+13-5=x

Mathematics
2 answers:
borishaifa [10]3 years ago
8 0
Add
5
5
to both sides of the equation.
√
2
x
+
13
=
x
+
5
2
x
+
13
=
x
+
5
To remove the radical on the left side of the equation, square both sides of the equation.
(
√
2
x
+
13
)
2
=
(
x
+
5
)
2
(
2
x
+
13
)
2
=
(
x
+
5
)
2
Simplify each side of the equation.

2
x
+
13
=
x
2
+
10
x
+
25
2
x
+
13
=
x
2
+
10
x
+
25
Solve for
x
x
.

x
=
−
2
,
−
6
x
=
-
2
,
-
6
Exclude the solutions that do not make
√
2
x
+
13
−
5
=
x
2
x
+
13
-
5
=
x
true.
x
=
−
2
IrinaVladis [17]3 years ago
6 0

Answer:

x=-8

Step-by-step explanation:

simplify it first: 2x+8=x

then get x on one side: 8=-x

then make x positive: -8=x

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\text{Given that Jake completed a marathon race in 3 hours and 12 minutes.}\\
\\
\text{we need to find this time in decimals. so we will convert 12 minutes into hours}\\
\\
\text{We know that there are 60 minutes in 1 hour. }\\
\\
\text{so in 1 minute there will be}=\frac{1}{60 }\text{ hour}

\text{hence in 12 minutes we have}=\frac{1}{60}\times 12=\frac{1}{5}=0.2 \text{ hours}\\
\\
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\\
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4 0
3 years ago
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OLga [1]

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Step-by-step explanation:

Each term in the parenthesis is multiplied by the 5 outside, that is

(5 × x) + (5 × 2) = 5x + 10

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Given

Given

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6 0
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Lerok [7]
The constant proportionality is 2/3 because it will still be going on
for example- 2/3+2/3= 2/3*2

The number 2/3 goes 
3 0
2 years ago
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