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3 years ago

3/10 + -1 / 10 = 3 + 1/10 = 4/10 = 2/5 correct the error in finding the sum

1 answer:

3 0

First, its not 3+1/10 its 3/10+1/10, second its a negative 1/10 not positive, so 3/10+-1/10. Thats the same thing as 3/10-1/10, so the answer is 2/10

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5x + 2y = -10<br> 3x + y = 66<br><br> please show work

liq [111]

Answer:

x=142, y=-360. (142, -360).

Step-by-step explanation:

5x+2y=-10

3x+y=66

----------------

5x+2y=-10

-2(3x+y)=-2*66

-----------------------

5x+2y=-10

-6x-2y=-132

-------------------

-x=-142

x=142

3(142)+y=66

426+y=66

y=66-426

y=-360

8 0

3 years ago

Read 2 more answers

The formula for the area of a triangle is A=1/2bh , where b is the base of the

belka [17]

For the first question: The equation would be set up as 30=1/2(12x) Then solve for x. (Or just plug that formula into Desmos)

Answer: x=5

4 0

3 years ago

I need bad can someone help

AveGali [126]

Answer:

6x + 8y

Step-by-step explanation:

Distribute 2:

Note: This means to multiply 2 with the numbers inside the parentheses.

2 * 3x = 6x

2 * 4y = 8y

Our answer would be 6x +8y

5 0

3 years ago

Read 2 more answers

The reaction 2Na(s) + Br₂(l) ➞ 2NaBr(s) is a(n) __________ reaction. *

Nesterboy [21]

Answer:

Step-by-step explanation:

There is no precipitate. NaBr is very soluble.

It is not a double replacement. There is only 1 product. Double replacements have two.

It is not a decomposition. If this equation was written backwards, the reaction would be a decomposition.

It must be a synthesis.

4 0

3 years ago

A drawer contains 3 white shirts, 2 blue shirts, and 5 gray shirts. A shirt is randomly

shutvik [7]

Answer:

Probability that first shirt is white and second shirt is gray if first shirt selected is set aside = $\frac{1}{4}$

Step-by-step explanation:

Given that

3 white, 2 blue and 5 gray shirts are there.

To find:

Probability that first shirt is white and second shirt is gray if first shirt selected is set aside = ?

Solution:

Here, total number of shirts = 3+2+5 = 10

First of all, let us learn about the formula of an event E:

$P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}$

$P(First\ White) = \dfrac{\text{Number of white shirts}}{\text {Total number of shirts left}}$

$P(First\ White) = \dfrac{3}{10}$

Now, this shirt is set aside.

So, total number of shirts left are 9 now.

$P(First\ White\ and\ second\ gray) = P(First White) \times P(Second\ Gray)\\\Rightarrow P(First\ White\ and\ second\ gray) = P(First White) \times \dfrac{\text{Number of gray shirts}}{\text{Total number of shirts left}}\\\\\Rightarrow P(First\ White\ and\ second\ gray) = \dfrac{3}{10} \times \dfrac{5}{9}\\\Rightarrow P(First\ White\ and\ second\ gray) = \dfrac{1}{2} \times \dfrac{1}{2}\\\Rightarrow P(First\ White\ and\ second\ gray) = \bold{\dfrac{1}{4} }$

So, the answer is:

Probability that first shirt is white and second shirt is gray if first shirt selected is set aside = $\frac{1}{4}$

4 0

3 years ago