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Vesnalui [34]
3 years ago
13

Whats the sum of (-3)+(-5)​

Mathematics
2 answers:
Flura [38]3 years ago
8 0

the answer is -8. have a nice day!⭐️

mrs_skeptik [129]3 years ago
6 0

Answer:

-8

Step-by-step explanation:

If you are adding two negative numbers its basically just normal addition but you add the negative sign before. So how i do it is 5+3=8 but with invisible negative signs. So really its -8

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A certain highway has a 7% grade. how many feet does it rise in a horizontal distance of 1 mile? (1 mile = 5280 feet. round your
pentagon [3]
For this case we have the following relationship:
 (x / 5280) = (7/100)
 From this relationship we must clear the value of x.
 Clearing we have:
 x = (7/100) * (5280)
 Calculating we have:
 x = 0.07 * 5280
 x = 369.6 feet
 Answer:
 
it does rise in a horizontal distance of 1 mile about:
 
x = 369.6 feet
3 0
4 years ago
Is -2t^2+3t+4 in standard form
Paul [167]

Answer:

-2t^2+3t+4 or -2t^2+3t^1+4t^0

Step-by-step explanation:

The equation is already written in standard form.

You write the largest exponents to the left and the smallest to the right.

<u>Your expression: </u>-2t^2+3t+4<u> can also be expressed as this below:</u>

-2t^2+3t^1+4t^0

t to the first power means mutiplying by t

t to the 0 power mean mutiplying by 1 or basically you get the same result

If t was 2...

3t= 3(2)=6\\3t^1=3(2)^1=3(2)=6

Same result:

4=4\\4t^0=4(2)^0=4(1)=4\\

8 0
4 years ago
4<br><img src="https://tex.z-dn.net/?f=4x%20-%203%20%3D%202x%20%2B%207%20find%20x%20" id="TexFormula1" title="4x - 3 = 2x + 7 fi
natima [27]

Answer:

x=5

Step-by-step explanation:

That is your answer .

First you do 4x-3+3=2x+7+3

then,4x=2x+10,then

subtract 2x from both side

4x-2x=2x+10-2x

simplify

2x=10

divide both sides by 2 2x/2=10/2

simplfy and you get x=5

Hope this helps :)

4 0
3 years ago
Need help on 3/4 please help me fast please read it and help me !!!!!!!!!fast!!!!!!!
tigry1 [53]

Answer:

Step-by-step explanation:

3) ΔABC ≅ ΔDEF

AB = ED   {Corresponding parts of corresponding  triangles are equal}

6y - 4 = 4y +2

add 4 to both sides

6y - 4 + 4 = 4y + 2 + 4

6y = 4y + 6

subtract 4y from both sides

6y - 4y = 4y + 6 - 4y

2y = 6

Divide by 2

\frac{2y}{2}=\frac{6}{2}\\

y = 3

AB = 6y - 4 = 6*3 - 4 = 18 - 4 =14

AB = 14

ΔABC ≅ ΔDEF

∠A = ∠D   {Corresponding parts of corresponding  triangles are equal}

5x + 2 =87

5x = 87 - 2

5x = 85

x = 85/5

x = 17

In ΔDEF,

∠D + ∠E + ∠F = 180°   {SUM OF ALL ANGLES OF TRIANGLES}

87 +  42 + ∠F = 180  

129 + ∠F = 180°

∠F = 180 - 129

∠F =  51°

ΔABC ≅ ΔDEF

∠C = ∠F   {Corresponding parts of corresponding  triangles are equal}

3y = 51

y= 51/3

y = 17

 

4 0
3 years ago
Please help me!!! I'm super confused
yulyashka [42]
In this case, the original figure is the large triangle and the dilated figure is the smaller dashed triangle. As early as this stage, we can already set that the dilation is a reduction. We can now eliminate the last choice which says enlargement.

One way to know how much did the figure reduce is by finding the areas of the bigger and smaller triangle. The area of a triangle is equal to half of the product of the length of its base and its height.

Area of larger triangle= 0.5(6 units)(4 units) = 12 square units
Area of smaller triangle = 0.5(3 units)(2 units) = 3 square units.

The ratio of the areas would be 3/12 = 1/4. Therefore, the answer is the first choice.
7 0
3 years ago
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