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Varvara68 [4.7K]
2 years ago
14

I need help.please explain and solve the problem.thank you so much that's 4th grade math​

Mathematics
2 answers:
VashaNatasha [74]2 years ago
5 0

Answer:

7x50=350

Step-by-step explanation:

alina1380 [7]2 years ago
4 0
There are 50 tables. Each table has 7 legs. How many legs altogether? ANSWER IS 350
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4 equal sides, 4 right angles, 2 pairs of parallel and opposit sides I think
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Which values are solutions to the inequality below<br> Check all that apply
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Complete the equation of the line through (-10,-7)(−10,−7)(, minus, 10, comma, minus, 7, )and (-5,-9)(−5,−9)(, minus, 5, comma,
Tanzania [10]

Answer:

y = -\frac{2}{5}\cdot x - 11

Step-by-step explanation:

First, the slope is determined by using the following expression:

m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}

m = \frac{-7-(-9)}{-10 - (-5)}

m = -\frac{2}{5}

The y-intercept is found by using the line equation, the slope and one point:

y = m \cdot x +b

b = y - m\cdot x

b = -7 - \left(-\frac{2}{5}\right)\cdot (-10)

b = -11

The equation of the line is:

y = -\frac{2}{5}\cdot x - 11

7 0
3 years ago
Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that
timama [110]

Answer:

Step-by-step explanation:

Given that evolution theory hypothesizes that people should spontaneously follow a​ 24-hour cycle of sleeping and wakingdash–even if they are not exposed to the usual pattern of sunlight.

Sample size n = 8

df = 8- 1=7

Since population std deviation is not known, and sample size is small we can use only t test

H-0: x bar = 24\\H_a: x bar \neq 24

(two tailed test at 5% level of significance)

24

28

24

22

25

26

26

25

 

mean 25

 

sd 3.142857143

 

se 1.111167799

Test statistic = Mean diff/se = 1.595

p = 0.1546

since p >0.05, accept null hypothesis.

There is no evidence to prove that the steady cycle is different from 24 hours.

4 0
3 years ago
Which of the following numbers creates a Pythagorean Triple? (12,16, ___ ) ?​
tatyana61 [14]

Answer:

20

Step-by-step explanation:

□□□□□□□□■■■■■■■■■○○○○○

7 0
2 years ago
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