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Virty [35]
3 years ago
9

Solve for x. 13x + 7 = 5x - 20

Mathematics
2 answers:
myrzilka [38]3 years ago
7 0
The answer is -27/8= -3.375
den301095 [7]3 years ago
5 0
<span>Answer is x= −<span>​27/8 <span>​​</span>
</span></span>Simplify <span>13x+7-5x<span>13x+7−5x</span></span><span> to </span><span>8x+7<span>8x+<span>7
</span></span></span><span><span>8x+7=−20</span>Then Subtract </span>7<span> from both sides
Which would then be </span>8x=−20−7

<span><span>
</span></span>
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A 52 foot ladder is set against the side of a house so that it reaches up 48 feet. If Jace
Alik [6]

Answer:

34.3

Step-by-step explanation:

no

8 0
3 years ago
A right-angled triangle has shorter side lengths exactly c^2-b^2 and 2bc units respectively, where b and c are positive real num
yKpoI14uk [10]

Answer: hypotenuse = c^{2} + b^{2}

Step-by-step explanation: Pythagorean theorem states that square of hypotenuse (h) equals the sum of squares of each side (s_{1},s_{2}) of the right triangle, .i.e.:

h^{2} = s_{1}^{2} + s_{2}^{2}

In this question:

s_{1} = c^{2}-b^{2}

s_{2} = 2bc

Substituing and taking square root to find hypotenuse:

h=\sqrt{(c^{2}-b^{2})^{2}+(2bc)^{2}}

Calculating:

h=\sqrt{c^{4}+b^{4}-2b^{2}c^{2}+(4b^{2}c^{2})}

h=\sqrt{c^{4}+b^{4}+2b^{2}c^{2}}

c^{4}+b^{4}+2b^{2}c^{2} = (c^{2}+b^{2})^{2}, then:

h=\sqrt{(c^{2}+b^{2})^{2}}

h=(c^{2}+b^{2})

Hypotenuse for the right-angled triangle is h=(c^{2}+b^{2}) units

3 0
3 years ago
Click now please i need help with math :D
lisov135 [29]
The answer is fifteen yards
6 0
3 years ago
Read 2 more answers
Please help me with B
QveST [7]
She is incorrect because 27 is not a prime number but yet it has 7 at the end
8 0
3 years ago
How to solve 6x-3=7x-11
VladimirAG [237]
Hello there.

<span>How to solve 6x-3=7x-11</span>
<span><span><span>6x</span>−3</span>=<span><span>7x</span>−11</span></span>
<span><span><span><span>6x</span>−3</span>−<span>7x</span></span>=<span><span><span>7x</span>−11</span>−<span>7x</span></span></span><span><span><span>−x</span>−3</span>=<span>−11</span></span>
<span><span><span><span>−x</span>−3</span>+3</span>=<span><span>−11</span>+3</span></span><span><span>−x</span>=<span>−8</span></span>
<span><span><span>−x/</span><span>−1</span></span>=<span><span>−8/</span><span>−1</span></span></span><span>x=8</span>
Answer: 8
6 0
3 years ago
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