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3 years ago

Evaluate. −7×(−6)×5= -7×(-6)×5= ______

Mathematics

1 answer:

Lunna [17]3 years ago

7 0

Answer:

210

Step-by-step explanation:

double negatives = positive

-7 * -6 * 5 = 7 * 6 * 5 = 42* 5 = 210

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Khalid carried water bottles to the field to share with his team at halftime. The water bottles weighed

jeka57 [31]

Answer:

Answer: D

${50x}^{2} + 30x + 10$

• first factorise out 10:

$= 10(5 {x}^{2} + 3x + 1)$

• then find factors of the quadratic equation in the bracket:

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3 years ago

Can yall help me I want 3 problems done thank you if not can you at least do one?

Stells [14]

Answer:

1. the plants grew 50%

2. if the plants grew to be 8 inches instead of 9 the they would have grown 33% which is less than 50%

3. 100% increase

Step-by-step explanation:

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2 years ago

Consider an urn containing 8 white balls, 7 red balls and 5 black balls.

weqwewe [10]

Answer + Step-by-step explanation:

1) The probability of getting 2 white balls is equal to:

$=\frac{8}{20} \times \frac{7}{19}\\\\= 0.147368421053$

2) the probability of getting 2 white balls is equal to:

$=C^{2}_{5}\times (\frac{8}{20} \times \frac{7}{19}) \times (\frac{12}{18} \times \frac{11}{17} \times \frac{10}{16})\\=0.397316821465$

3) The probability of getting at least 72 white balls is:

$=C^{72}_{150}\times \left( \frac{8}{20} \right)^{72} \times \left( \frac{7}{20} \right)^{78} +C^{73}_{150}\times \left( \frac{8}{20} \right)^{73} \times \left( \frac{7}{20} \right)^{77} + \cdots +C^{149}_{150}\times \left( \frac{8}{20} \right)^{149} \times \left( \frac{7}{20} \right)^{1} +\left( \frac{8}{20} \right)^{150}$

$=\sum^{150}_{k=72} [C^{k}_{150}\times \left( \frac{8}{15} \right)^{k} \times \left( \frac{7}{15} \right)^{150-k}]$

5 0

1 year ago

Read 2 more answers

A boat travels 300.4 kilometers in 11 hours (with a constant speed) how much time will it take traveling 240 kilometers

borishaifa [10]

Answer:

The boat travels (300.4 km / 11 hours) which is 27.30909091 kilometers per hour, So it would take 240 / 27.30909091 hours or 8.78828229 hours. (Which rounds off to 8.79 hours)

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

Exponential regression pls help fast

liberstina [14]

Answer:

Step-by-step explanation:

Exponential regression means a function that best fits the graph, or data table.

If we were to replace x (the input) with 1, A and C are eliminated options since they both equal very low values.

D is also eliminated, if the input was 1 it would not equal relatively close, rather it would be 1000.7

Let's check B: