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3 years ago

11

Can you help me with this

2 answers:

Tema [17]3 years ago

8 0

$(4z-1)(2z-2)=\\
8z^2-8z-2z+2=\\
8z^2-10z+2$

IRINA_888 [86]3 years ago

3 0

Answer:

ummm i can;t see

Step-by-step explanation:

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Hi I really need help with this question please,

Mrrafil [7]

Answer:

${ ( \sqrt{30 - x} )}^{2} = {x}^{2} \\ 30 - x = {x}^{2} \\ \\ {x}^{2} + x - 30 = 0 \\ delta = 1 - 4 \times ( - 30) \times 1 = 121 \\ x1 = \frac{ - 1 + \sqrt{121} }{2 \times 1} = \frac{ - 1 + 11}{2} = 5 \\ x2 = \frac{ - 1 - \sqrt{121} }{2 \times 1} = \frac{ - 1 - 11}{2} = - 6 \\$

6 0

3 years ago

Jamie takes at random a counter from the bag and records the colour. Red : blue : green = 1:3:7 Jamie does this a number of time

Sonbull [250]

Answer: There are 249 times Jamie takes a counter from the bag.

Explanation:

Since we have given that

Ratio of colour of red to blue to green is 1:3:7.

Number of blue counters = 68

Let the total number of times Jamie does from the bag be x.

So, According to question,

$\frac{3}{11}\times x=68\\\\x=\frac{11}{3}\times 68\\\\x=249.33\\\\=249\ approx.$

Hence, there are 249 times Jamie takes a counter from the bag.

8 0

3 years ago

You and your family took a trip over track out that was 1.5 hours away. Which two trips could your family have taken?

dusya [7]

Answer:

i think a

Step-by-step explanation:

7 0

3 years ago

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(4x) to the power of -4

Eva8 [605]

Answer:

3.90625×10^_03

Step-by-step explanation:

gshdieej

4 0

3 years ago

A cross country runner Covers 2.5 miles in 12.5 minutes what is the runners average speed in miles per hour

stiks02 [169]

I believe the answer is 5 because if however many times you can multiply 2.5 into 12.5, you get the answer of 5.

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4 years ago

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