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Ipatiy [6.2K]
3 years ago
5

Evaluate each expression . 1.) 1 + 4 • 6 - 3

Mathematics
2 answers:
Annette [7]3 years ago
5 0
I calculated the expression and I got 22.
Ket [755]3 years ago
5 0

Answer:

15

Step-by-step explanation:

1 + 4

= 5

6 - 3

= 3

5 * 3

= 15

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The square of a number decreased by 3 times the number 28 find all possible values for the number
stealth61 [152]

Question:

The square of a number decreased by 3 times the number is 28 find all possible values for the number  

Answer:

The possible values of number are 7 and -4

Solution:

Given that the square of a number decreased by 3 times the number is 28

To find: all possible values of number

Let "a" be the unknown number

From given information,

square of a number decreased by 3 times the number = 28

a^2 - 3a = 28

a^2 - 3a - 28 = 0

Let us solve the above quadratic equation

\text {For a quadratic equation } a x^{2}+b x+c=0, \text { where } a \neq 0

x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}

Using the above formula,

\text { For } a^{2}-3 a-28=0 \text { we have } a=1, b=-3, c=-28

\begin{aligned}&a=\frac{-(-3) \pm \sqrt{(-3)^{2}-4(1)(-28)}}{2 \times 1}\\\\&a=\frac{3 \pm \sqrt{9+112}}{2}\\\\&a=\frac{3 \pm \sqrt{121}}{2}=\frac{3 \pm 11}{2}\\\\&a=\frac{3+11}{2} \text { or } a=\frac{3-11}{2}\\\\&a=7 \text { or } a=-4\end{aligned}

Thus the possible values of number are 7 and -4

5 0
3 years ago
Plz answer..........
Marina CMI [18]

Answer:

itsn't it 64 it says it there

Step-by-step explanation:

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3 years ago
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Help please!! and actually try to solve it this is a test and I wanna do good
schepotkina [342]

Answer:

After doing the math, I came up with B and/or C could be the answer

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How would logx (49) = x look like in exponential form
Ivanshal [37]

I'm assuming the given log equation is \log_{\text{x}}(49) = \text{x}

If so, then the exponential form is \text{x}^{\text{x}} = 49

This is because the general form \log_{\text{b}}(\text{x}) = \text{y} transforms into \text{y} = \text{b}^{\text{x}}

For both equations, the 'b' is the base.

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2 years ago
A bag contains 6 blue counters and 4 red counters. I take two counters out at random. My
Step2247 [10]

Answer:

Possible outcome=6+4=10

P(red counter)=2/10=1/5

6 0
3 years ago
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