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4 years ago

Between what two consecutive integers does the square root of 128 lie?Between what two consecutive integers does lie?

Mathematics

1 answer:

Mrrafil [7]4 years ago

4 0

B...
11^2 = 121
12^2 = 144

128 is between those

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The equation of a circle is shown

skad [1K]

The center of the circle is found at (h,k)
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Center: (5,4) Radius: 2

so your answer is A 5

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4 years ago

The highway department is testing two types of reflecting paint for concrete bridge end pillars. The two kinds of paint are alik

tankabanditka [31]

Answer:

a. difference of means

Step-by-step explanation:

Given that :

Mean , x = 9.4

Standard deviation, $s.d_1$ = 2.5

Number, $n_1$ = 12

Mean, y = 6.5

standard deviation, $s.d_2$ = 2.4

Number, $n_2$ = 12

The null hypothesis is : $H_0: \mu_1=\mu_2$

The alternate hypothesis is : $H_1: \mu_1>\mu_2$

Level of significance, $\alpha$ = 0.1

From the $\text{standard normal table, right tailed,}$ $t_{1/2}$ = 1.363

Since out test is right tailed.

Reject $H_0$ , if $T_0>1.363$

We use the test statics,

$t_0=\frac{(x-y)}{\sqrt{\frac{s.d_1}{n_1}+\frac{s.d_2}{n_2}}}$

$t_0=\frac{(9.4-6.5)}{\sqrt{\frac{6.25}{12}+\frac{5.76}{12}}}$

$t_0=2.899$

$|t_0|=2.899$

$\text{Critical value}$

The value of $|t_{1/2}|$ with minimum $\left(n_1-1,n_2-1)$ that is 11 df is 1.363

We go $|t_0|=2.899$ and $|t_{1/2}|$ = 1.363

Decision making:

Since the value of $|t_0|>|t_{1/2}|$$ and we reject the $H_0$

The p-value : right tail $H_a:(p>2.8988)$

= 0.00724

Therefore the value of $p_{0.1} > 0.00724$ , and so we reject the $H_0$

Thus we are testing 'the difference of means" in this problem.

7 0

3 years ago

If f(x) is an exponential function where f(1) =11 and f(6.5) = 100, then find the value of f(12) to the nearest hundredth.

krek1111 [17]

Answer: f(12) is estimated to 909.09

Step-by-step explanation:

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3 years ago

What is the value of x in the equation x+7=−213 x+7=−2

MariettaO [177]

Answer:

Step-by-step explanation:

⅓x + 7 = -2

isolate the x term by subtracting 7 from both sides

⅓x = -9

Multiply both sides by 3

x = -27

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3 years ago

Solve the system of linear equations using either substitution or the elimination method.

Lelechka [254]

Answer:

x=2;y=2

Step-by-step explanation:

2x+y=6..........1

3x-y=4............2

adding equation1 with equation 2

2x+y+3x-y=6+4

5x=10

x=10/5=2

substituting vslue of y in equation 1

2×2+y=6

y=6-4

y=2

4 0

3 years ago