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Stells [14]
3 years ago
13

Pre algebra help ( will give brainliest ) sorry if it's hard to see

Mathematics
1 answer:
Alina [70]3 years ago
4 0
3.4×10⁻¹⁴ × 1.8×10²⁸

= (3.4 x 1.8) x 10⁽⁻¹⁴⁺²⁸⁾

= 6.12 x 10¹⁴


Answer is A.

Hope it helps!
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The principal P is borrowed at a simple interest rate r for a period of time t. Find the simple interest owed for the use of the
Natasha_Volkova [10]

Answer:

= $20

Step-by-step explanation:

Simple interest is given by the formula'

Interest = PRt/100, where P is the principal amount, R is the rate of interest and t is the interest period in years

Therefore;

Simple interest = ($ 1000 × 2 × 1)/100

                         = $ 20

The simple interest owed for the use of the principal at a period of 1 year is $ 20.

8 0
3 years ago
Solve the equations help
Leni [432]

Answer:

First equation x=2, Y=9, Second Eq, x=2, y=1

Step-by-step explanation:

X+Y=11

2X-Y=-5 by substitution Y=11-X

So, 2x-(11-x)=-5, 2x-11+x=-5, 3x=6, x=2. Thus, Y=11-2=9

2x+y=5

3x-2y=4

so, y=5-2x

Thus, 3x-2(5-2x)=4

3x-10+4x=4, 7x=14, x=2, Thus, Y=5-2(2)= 1

5 0
3 years ago
Give the least common multiple: 3a, 15 _____
stiks02 [169]

Answer:

Answer: LCM of 3 and 15 is 15. 2.

Step-by-step explanation:

Hope this helps

4 0
2 years ago
Read 2 more answers
Anybody know the answer I need help. Please
Evgen [1.6K]

Answer:

  \dfrac{p^2+9p+2}{p^2-49}

Step-by-step explanation:

Problems like this require that you recognize that the denominator of the right term is a factor of the denominator of the left term. That is, you're supposed to know how to recognize and factor the difference of two squares.

  \dfrac{5-p}{49-p^2}+\dfrac{p+1}{p-7}=\dfrac{p-5}{p^2-49}+\dfrac{p+1}{p-7}\\\\=\dfrac{p-5}{(p-7)(p+7)}+\dfrac{p+1}{p-7}\cdot\dfrac{p+7}{p+7}\\\\=\dfrac{(p-5)+(p+1)(p+7)}{(p-7)(p+7)}=\dfrac{p-5+p^2+8p+7}{p^2-49}=\dfrac{p^2+9p+2}{p^2-49}

8 0
3 years ago
ANSWER ASAP FOR BRAINIEST AND 100 POINT ASAP<br> Find the value of x in the triangle.
deff fn [24]

The total measure of all the angles in a triangle is 180°.

Since there is already a 90° angle, the other 2 angles must also add up to 90°.

The only answer that fits is x = 9.

Check:

9x7 = 63°

3x9 = 27°

Add up = 90°

:)

8 0
3 years ago
Read 2 more answers
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