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4 years ago

1. To the nearest ten and the nearest hundred, a store sold about 300 puzzles.

Mathematics

2 answers:

BartSMP [9]4 years ago

5 0

Answer:

B. 279

Step-by-step explanation:

aliya0001 [1]4 years ago

3 0

The answer is B 279 I believe

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What does p equal in this equation? (p+2)-4=14

nata0808 [166]

P+2-4=14
p+2=18
p=16
hope you have a good day

8 0

3 years ago

Please help me solve this

natita [175]

Answer:

( 2,5)

Step-by-step explanation:

The solution is where the two graphs intersect

The graphs intersect at x = 2 and y = 5

( 2,5) is the solution to the system

5 0

3 years ago

Which operations involving complex numbers have solutions represented by point A on the graph? PLEASE HELP

Alina [70]

Answer:

Option 3 and 4

Step-by-step explanation:

We have to find the solutions represented by point A on graph

The point A is represented by (-6,7i)

Lets check all options one by one

$2(1-2i)-(4+3i)\\= (2-4i)-(4+3i)\\=2-4i-4-3i\\=2-4-4i-3i\\=-2-7i$

This option is not correct

$2(1+2i)+(-4-3i)\\=(2+4i)-4-3i\\=2+4i-4-3i\\=2-4+4i-3i\\=-2+i$

This option is also not correct

$2(-1+2i)-(4-3i)\\=(-2+4i)-4+3i\\=-2+4i-4+3i\\=-2-4+4i+3i\\=-6+7i$

This solution is same as point A so this option is correct

$(-2+4i)+(-4+3i)\\=-2+4i-4+3i\\=-2-4+4i+3i\\=-6+7i$

Solution same as point A so this is correct option.

$(-2-4i)+(4-3i)\\=-2-4i+4-3i\\=-2+4-4i-3i\\=2-7i$

Not correct

The correct options are option no 3 and 4 ..

7 0

4 years ago

Two of largest mammals on earth are the blue wale and the African elephant. An adult male blue whale weighs about 170 tonnes or

Liula [17]

Weight is 1.7 × 10^5 kg

Step-by-step explanation:

Step 1: Given that the weight of the blue whale = 170 tonnes
Step 2: Convert the number of tonnes into kg.

⇒ 170 tonnes = 170 × 1000 (1 tonne = 1000 kg)

⇒ 170 tonnes = 17 × 10^4 kg

Step 3: Convert it into standard format, that is with just one decimal point.

⇒ 17 × 10^4 = 1.7 × 10^5 kg (Dividing and multiplying by 10 on both sides)

5 0

3 years ago

Find the value of c that makes the expression a perfect square trinomial.<br><br> x2 + 4x + c

masha68 [24]

the value of c that makes the expression a perfect square binomial is c=4 .

<u>Step-by-step explanation:</u>

Here we have , an expression x2 + 4x + c or , $x^2 + 4x + c$ . We need to find the value of c that makes the expression a perfect square binomial. Let's find out:

We have , $x^2 + 4x + c$

⇒ $x^2+4x+c$

⇒ $x^2+2(2)x+c$

Now , we know that $(a+b)^2=a^2+2(a)(b)+b^2$

Comparing above equation , to $x^2+2(2)x+c$ we get ;

⇒ $x^2+2(2)x+c$ { $c=2^2$ }

⇒ $x^2+2(2)x+2^2$

⇒ $(x+2)^2$

Therefore , the value of c that makes the expression a perfect square binomial is c=4 .

7 0

3 years ago