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2 years ago

50 points!!

Mathematics

2 answers:

V125BC [204]2 years ago

6 0

Answer:

the answer is 2

Step-by-step explanation:

I completed the test

Daniel [21]2 years ago

4 0

Answer:

iykvhchjgmh.Algal blooms have dramatic effects on water chemistry, most notably pH and dissolved oxygen (DO). When algae remove carbon dioxide during photosynthesis they raise the pH by increasing the level of hydroxide. The opposite reaction occurs during respiration when carbon dioxide is produced lowering hydroxide and lowering the pH.

Step-by-step explanation:

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Please help to solve this!

Mashutka [201]

Yeah its definitely 5!

4 0

2 years ago

Fraction multiplying by fractions

Amanda [17]

$\bf \cfrac{2}{9}\times a=\cfrac{3}{15}\implies \cfrac{2a}{9}=\cfrac{1}{5}\implies 2a=\cfrac{9\cdot 1}{15}\implies 2a=\cfrac{3}{5}
\\\\\\
a=\cfrac{3}{2\cdot 5}
\implies 
a=\cfrac{3}{10}\\\\
-------------------------------\\\\
\cfrac{2}{5}\times b=\cfrac{7}{12}\implies \cfrac{2b}{5}=\cfrac{7}{12}\implies 2b=\cfrac{5\cdot 7}{12}\implies 2b=\cfrac{35}{12}
\\\\\\
b=\cfrac{35}{2\cdot 12}\implies b=\cfrac{35}{24}$

3 0

2 years ago

What’s a real number between the square root of 13 and the square root of 14

Pie

Real numbers can be both rational and irrational.

sqrt(13) = 3.60555

sqrt(14) = 3.74166

If you're looking for a rational number, there are lots of them to choose from. Easiest is probably 3.7 = 37/10.

An irrational number in this range might be sqrt(27/2).

Hope this helps!

6 0

3 years ago

Jaydas house is located at (1,5). She can walk in a straight line to get to Christians house. A fast food restaurant is located

steposvetlana [31]

Answer:

C. (9,1)

Step-by-step explanation:

Let the coordinated of Jaydas House be:

A(x_1, y_1) = (1,5)

The coordinates of Christian's House be:

B( x_2, y_2)

Let the restaurant be

M(x_M, y_M) = (7,2)

The ratio is 3:1

m=3 and n=1

So by the formula of finding the point that divides lines into given ratios

$x_M = \frac{nx_1+mx_2}{m+n}\\7 = \frac{(1)(1)+(3)x_2}{3+1}\\7 = \frac{1+3x_2}{4}\\7*4 = 1 + 3x_2\\28-1=3x_2\\27=3x_2\\x_2 = \frac{27}{3}\\x_2 = 9\\y_M = \frac{ny_1+my_2}{m+n}\\2 = \frac{(1)(5)+(3)y_2}{3+1}\\2 = \frac{5+3y_2}{4}\\2*4 = 5 + 3y_2\\8=5+3y_2\\8-5=3y_2\\3=3y_2\\y_2 = \frac{3}{3}\\y_2 = 1$

Therefore the coordinates of Christian's house are (9,1)

Option C is correct ..

7 0

2 years ago

Mc:radio:(05.05 LC)

WARRIOR [948]

the first line in the chart has x as 0 and Y as 25

this means the fixed amount would be $25

7 0

3 years ago

Read 2 more answers