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boyakko [2]
3 years ago
15

1) 5.4 +(-9.7) Find the sum

Mathematics
2 answers:
aivan3 [116]3 years ago
5 0

Answer:

-4.3

Step-by-step explanation:

5.4 + (-9.7)

to

5.4 -9.7                        a negative times a positive is still a negative

then just combine them.

=

-4.3

harina [27]3 years ago
4 0

Answer:

-4.3

Step-by-step explanation:

5.4 +(-9.7)

= 5.4-9.7

=-4.3

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Please help me.Find the value of x in the isosceles triangle shown below​
blagie [28]

There is an isosceles triangle.

The triangle is like two right triangles put together.

To find out the height of the triangle, we remove the other right triangle and we use the other triangle to find the height using the Pythagorean theorem.

Phytagoras Theorem :

b² = c² - a²

x² = 8² - (6÷2)²

x² = 64 - 3²

x² = 64 - 9

x² = 55

x = √55

So, the value of x is √55 (B)

<em>Hope </em><em>it </em><em>helpful </em><em>and </em><em>useful </em><em>:</em><em>)</em>

4 0
3 years ago
AB 1 CD. Find x.<br> 4x + 50
yKpoI14uk [10]

Answer:

4x +50=90

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8 0
2 years ago
3x+(24x+8)what is the answer ​
Keith_Richards [23]

We can get rid of the parentheses so it looks like this:

3x + 24x + 8.

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27x + 8

5 0
3 years ago
Read 2 more answers
Solve for Inequality
uysha [10]

Answer:

x > -1

Step-by-step explanation:

Divide the whole inequality by 9.

(\frac{x}{3}+1)>\frac{6}{9}

Subtract 1.

\frac{x}{3} > \frac{2}{3} - 1

\frac{x}{3} > -\frac{1}{3}

Multiply by 3.

x > -1

6 0
3 years ago
Abigail tosses a coin off a bridge into the stream below. The distance, in feet, the coin above the water is modeled by the equa
melomori [17]

Answer:

7 seconds

Step-by-step explanation:

Distance of the coin above the water is modeled by the equation

y=-16x^2+96x+112

where x is time taken to cover the distance

Now equating with zero.

0=-16x^2+96x+112\\\Rightarrow 16x^2-96x-112=0\\\Rightarrow x=\dfrac{-\left(-96\right)\pm \sqrt{\left(-96\right)^2-4\times \:16\left(-112\right)}}{2\times \:16}\\\Rightarrow x=7, -1

So, time taken by the coin to hit the water is 7 seconds.

6 0
3 years ago
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