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2 years ago

I need help whats 9+10??? Please it an emergency and what y’all’s discord with number please!!!

Mathematics

2 answers:

VARVARA [1.3K]2 years ago

7 0

Answer:

Step-by-step explanation:

Simply put, 9 + 10 = 19.

Method 1

Distribute each number, then count individual numbers, take h's for example

hhhhhhhhh (9) + hhhhhhhhhh (10) = hhhhhhhhhhhhhhhhhhh (19)

Method 2

Plug this into a calculator, and get 19!

iragen [17]2 years ago

5 0

Answer:

It is 19

9+10=19

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X^2 + 7x – 18 = 0 a {–2, 9} b {–9, 2} c {2, 9} d {–2, –9}

Sedaia [141]

Answer:

b)-9,2

Step-by-step explanation:

x^2+7x-18=0

x^2+9x-2x-18=0

x(x+9)-2(x+9)=0

(x+9)(x-2)=0

therefore

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2 years ago

HELP ME PLEASE

solmaris [256]

Answer:

The initial mass of the sample was 16 mg.

The mass after 5 weeks will be about 0.0372 mg.

Step-by-step explanation:

We can write an exponential function to model the situation.

Let the initial amount be A. The standard exponential function is given by:

$P(t)=A(r)^t$

Where r is the rate of growth/decay.

Since the half-life of Palladium-100 is four days, r = 1/2. We will also substitute t/4 for t to to represent one cycle every four days. Therefore:

$\displaystyle P(t)=A\Big(\frac{1}{2}\Big)^{t/4}$

After 12 days, a sample of Palladium-100 has been reduced to a mass of two milligrams.

Therefore, when x = 12, P(x) = 2. By substitution:

$\displaystyle 2=A\Big(\frac{1}{2}\Big)^{12/4}$

Solve for A. Simplify:

$\displaystyle 2=A\Big(\frac{1}{2}\Big)^3$

Simplify:

$\displaystyle 2=A\Big(\frac{1}{8}\Big)$

Thus, the initial mass of the sample was:

$A=16\text{ mg}$

5 weeks is equivalent to 35 days. Therefore, we can find P(35):

$\displaystyle P(35)=16\Big(\frac{1}{2}\Big)^{35/4}\approx0.0372\text{ mg}$

About 0.0372 mg will be left of the original 16 mg sample after 5 weeks.

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2 years ago

Is (3, 2) a solution of -8x – 2y < 6?

zzz [600]

Answer:

yes

Step-by-step explanation:

To determine if the point is a solution, substitute the coordinates into the left side of the inequality, evaluate and compare with right side.

- 8(3) - 2(2) = - 24 - 4 = - 28 < 6

Thus (3, 2) is a solution

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2 years ago

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Four triangles are shown. One side of each triangle lies on a ray, and the triangles are not drawn to scale. Based on these tria

S_A_V [24]

Answer:

Step-by-step explanation:

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2 years ago

Solve for x x^2-3x+2=0

cricket20 [7]

Answer:

x=1,2

Step-by-step explanation:

x^2-3x+2=0

(x-1)(x-2)

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2 years ago