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3 years ago

Help. Explain good for brainliest

Mathematics

1 answer:

STatiana [176]3 years ago

3 0

Answer:

As illustrated

Step-by-step explanation:

since ΔABC is a isosceles right triangle, m∠A = m∠C = 45°

and the rest angles are shown in the illustration, you should be able to figure it out by your self.

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What fraction is closest to zero? 3/4, 1/3, -3/6, -5/8

o-na [289]

Answer:

1/3 is closest to zero.

Step-by-step explanation:

1/3 is closest to zero.

7 0

3 years ago

What is an equation of the line that passes through the points (-6,5) and (6, 7)?

NemiM [27]

Answer:

$y = \frac{1}{6} x + 6$

Step-by-step explanation:

The equation of a line can be written in the form of y=mx+c, where m is the gradient and c is the y-intercept. This form is known as the slope-intercept form.

Use the gradient formula below to find the value of m:

$gradient = \frac{y1 - y2}{x1 - x2}$

*(x₁, y₁) is the first coordinate and (x₂, y₂) is the second coordinate.

$m = \frac{7 - 5}{6 - ( - 6)} \\ m = \frac{2}{12} \\ m = \frac{1}{6}$

Substitute the value of m into the equation:

y= ⅙x +c

To find the value of c, substitute a pair of coordinates.

When x= 6, y= 7,

$7 = \frac{1}{6} (6) + c \\ 7 = 1 + c \\ c = 7 - 1 \\ c = 6$

Thus, the equation of the line is y= ⅙x +6.

8 0

3 years ago

Graph a-7<-4 Will give brainlest No links!!!!

Aleonysh [2.5K]

Answer:

$a\leq 3$

Step-by-step explanation:

$a-7\leq -4,\\a\leq3$

When graphed, an arrow should be drawn pointing left with a solid dot on -3. Since the inequality line provided is not labelled, choose any vertical line and mark it as -3. Then add a solid circle and draw an arrow left, representing that the solutions of this inequality are all real numbers less than -3.

6 0

3 years ago

Distance between (4, –1) and (8, –1)?

HACTEHA [7]

Answer: 4

Step-by-step explanation: compute the distance between (x1, y1), (x2, y2):

(8 -4)² + [ -1 - (-1) ]² = 4

7 0

3 years ago

Read 2 more answers

An article described a study of reading speed for undergraduate and graduate students. In a sample of 12 undergraduates, the mea

Elis [28]

Answer: $(0.85,\ 3.15)$

Step-by-step explanation:

Given : $n_x=12\ ;\ \mu_x=4.8\ ;\ \sigma_x=1.9$

$n_y=24\ ;\ \mu_y=2.8\ ;\ \sigma_y=1.0$

Significance level : $\alpha: 1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

Now, the confidence interval for difference of two population mean :-

$\mu_x-\mu_y\pm z_{\alpha/2}(\sqrt{\dfrac{\sigma_x^2}{n_x}+\dfrac{\sigma_y^2}{n_y}}\\\\=4.8-2.8\pm(1.96)(\sqrt{\dfrac{(1.9)^2}{12}+\dfrac{(1.0)^2}{24}}\\\\\approx2\pm1.15\\\\=(0.85,\ 3.15)$

Hence, the 95% confidence interval for the difference $\mu_x-\mu_y=(0.85,\ 3.15)$

4 0

3 years ago